diff --git a/.eslintrc b/.eslintrc
index d59b45b..2578864 100644
--- a/.eslintrc
+++ b/.eslintrc
@@ -14,5 +14,6 @@
     "no-unused-vars": [2, {"args": "none"}], // Allow unused argument definition in order to keep functions signatures self documented.
     "no-use-before-define": [2, "nofunc"],
     "quote-props": [2, "as-needed"],         // Disallow to quote properties (of object) when it's not requiered.
+    "max-len": 1 // Seems to be redundant to me.
    },
 }
diff --git a/src/rules/break/delete-array-value.js b/src/rules/break/delete-array-value.js
new file mode 100644
index 0000000..e576f48
--- /dev/null
+++ b/src/rules/break/delete-array-value.js
@@ -0,0 +1,45 @@
+
+export default function deleteArrayValue({ kind, path, item }) {
+  const match = kind === 'A'
+              && path.length > 1
+              && item
+              && item.kind === 'D';
+  if (match) {
+    const pathId = path[1];
+    const arrayType = path.slice(-1);
+    const arrayName = path.slice(-2)[0];
+
+    if (path[0] === 'paths' && path[3] === 'parameters') {
+      const paramName = path[4];
+      const method = path[2];
+
+      return {
+        path: pathId,
+        message: `${pathId} (${method}) - param ${paramName} - ${arrayName}.${item.lhs} ${arrayType} value deleted`,
+        method,
+        param: paramName,
+        arrayName,
+        arrayValue: item.lhs,
+      };
+    } else if (path[0] === 'definitions' && path[2] === 'properties') {
+      const objectPath = path.slice(0, -2).join('/');
+      const propertyName = path[3];
+
+      return {
+        message: `${objectPath} - Object property - ${arrayName}.${item.lhs} ${arrayType} value deleted`,
+        path: objectPath,
+        property: propertyName,
+        arrayName,
+        arrayValue: item.lhs,
+      };
+    }
+
+    return {
+      message: `${arrayName}.${item.lhs} - ${arrayType} value deleted`,
+      path: pathId,
+      arrayName,
+      arrayValue: item.lhs,
+    };
+  }
+  return false;
+}
diff --git a/src/rules/index.js b/src/rules/index.js
index e00d6ef..b754c73 100644
--- a/src/rules/index.js
+++ b/src/rules/index.js
@@ -7,6 +7,7 @@ export default {
   break: {
     'add-required-object-property': require('./break/add-required-object-property.js'),
     'add-required-param': require('./break/add-required-param.js'),
+    'delete-array-value': require('./break/delete-array-value.js'),
     'delete-definition': require('./break/delete-definition.js'),
     'delete-method': require('./break/delete-method.js'),
     'delete-operation-id': require('./break/delete-operation-id.js'),
@@ -26,6 +27,7 @@ export default {
     'edit-response': require('./break/edit-response.js'),
   },
   smooth: {
+    'add-array-value': require('./smooth/add-array-value.js'),
     'add-definition': require('./smooth/add-definition.js'),
     'add-description': require('./smooth/add-description.js'),
     'add-method': require('./smooth/add-method.js'),
diff --git a/src/rules/smooth/add-array-value.js b/src/rules/smooth/add-array-value.js
new file mode 100644
index 0000000..7b814bc
--- /dev/null
+++ b/src/rules/smooth/add-array-value.js
@@ -0,0 +1,45 @@
+
+export default function addArrayValue({ kind, path, item }) {
+  const match = kind === 'A'
+              && path.length > 1
+              && item
+              && item.kind === 'N';
+  if (match) {
+    const pathId = path[1];
+    const arrayType = path.slice(-1);
+    const arrayName = path.slice(-2)[0];
+
+    if (path[0] === 'paths' && path[3] === 'parameters') {
+      const paramName = path[4];
+      const method = path[2];
+
+      return {
+        path: pathId,
+        message: `${pathId} (${method}) - param ${paramName} - ${arrayName}.${item.rhs} ${arrayType} value added`,
+        method,
+        param: paramName,
+        arrayName,
+        arrayValue: item.rhs,
+      };
+    } else if (path[0] === 'definitions' && path[2] === 'properties') {
+      const objectPath = path.slice(0, -2).join('/');
+      const propertyName = path[3];
+
+      return {
+        message: `${objectPath} - Object property - ${arrayName}.${item.rhs} ${arrayType} value added`,
+        path: objectPath,
+        property: propertyName,
+        arrayName,
+        arrayValue: item.rhs,
+      };
+    }
+
+    return {
+      message: `${arrayName}.${item.rhs} - ${arrayType} value added`,
+      path: pathId,
+      arrayName,
+      arrayValue: item.rhs,
+    };
+  }
+  return false;
+}
diff --git a/test/rules/break/delete-array-value/0-new.json b/test/rules/break/delete-array-value/0-new.json
new file mode 100644
index 0000000..814a1e3
--- /dev/null
+++ b/test/rules/break/delete-array-value/0-new.json
@@ -0,0 +1,22 @@
+{
+  "swagger": "2.0",
+  "info": {
+    "version": "1.0.0",
+    "title": "Test API"
+  },
+  "paths": {},
+  "definitions": {
+    "Definition.Path.Name": {
+      "type": "object",
+      "properties": {
+          "EnumProperty": {
+            "enum": [
+                "Value1",
+                "Value2"
+            ],
+            "type": "string"
+          }
+      }
+    }
+  }
+}
diff --git a/test/rules/break/delete-array-value/0-old.json b/test/rules/break/delete-array-value/0-old.json
new file mode 100644
index 0000000..c2eb6ac
--- /dev/null
+++ b/test/rules/break/delete-array-value/0-old.json
@@ -0,0 +1,23 @@
+{
+  "swagger": "2.0",
+  "info": {
+    "version": "1.0.0",
+    "title": "Test API"
+  },
+  "paths": {},
+  "definitions": {
+    "Definition.Path.Name": {
+      "type": "object",
+      "properties": {
+          "EnumProperty": {
+            "enum": [
+                "Value1",
+                "Value2",
+                "Value3"
+            ],
+            "type": "string"
+          }
+      }
+    }
+  }
+}
diff --git a/test/rules/break/delete-array-value/0-output.json b/test/rules/break/delete-array-value/0-output.json
new file mode 100644
index 0000000..a19546c
--- /dev/null
+++ b/test/rules/break/delete-array-value/0-output.json
@@ -0,0 +1,14 @@
+{
+  "breaks": [
+    {
+      "ruleId": "delete-array-value",
+      "message": "definitions/Definition.Path.Name/properties - Object property - EnumProperty.Value3 enum value deleted",
+      "path": "definitions/Definition.Path.Name/properties",
+      "property": "EnumProperty",
+      "arrayName": "EnumProperty",
+      "arrayValue": "Value3"
+    }
+  ],
+  "smooths": [],
+  "unmatchDiffs": []
+}
diff --git a/test/rules/break/delete-array-value/1-new.json b/test/rules/break/delete-array-value/1-new.json
new file mode 100644
index 0000000..a7c36b6
--- /dev/null
+++ b/test/rules/break/delete-array-value/1-new.json
@@ -0,0 +1,25 @@
+{
+  "swagger": "2.0",
+  "info": {
+    "version": "1.0.0",
+    "title": "Test API"
+  },
+  "paths": {
+    "/test/": {
+      "get": {
+        "parameters": [
+          {
+              "name": "enumParam",
+              "in": "query",
+              "required": false,
+              "type": "string",
+              "enum": [
+                  "Value1",
+                  "Value2"
+              ]
+          }
+        ]
+      }
+    }
+  }
+}
diff --git a/test/rules/break/delete-array-value/1-old.json b/test/rules/break/delete-array-value/1-old.json
new file mode 100644
index 0000000..e33b813
--- /dev/null
+++ b/test/rules/break/delete-array-value/1-old.json
@@ -0,0 +1,26 @@
+{
+  "swagger": "2.0",
+  "info": {
+    "version": "1.0.0",
+    "title": "Test API"
+  },
+  "paths": {
+    "/test/": {
+      "get": {
+        "parameters": [
+          {
+              "name": "enumParam",
+              "in": "query",
+              "required": false,
+              "type": "string",
+              "enum": [
+                  "Value1",
+                  "Value2",
+                  "Value3"
+              ]
+          }
+        ]
+      }
+    }
+  }
+}
diff --git a/test/rules/break/delete-array-value/1-output.json b/test/rules/break/delete-array-value/1-output.json
new file mode 100644
index 0000000..6b00a57
--- /dev/null
+++ b/test/rules/break/delete-array-value/1-output.json
@@ -0,0 +1,15 @@
+{
+  "breaks": [
+    {
+      "ruleId": "delete-array-value",
+      "message": "/test/ (get) - param enumParam - enumParam.Value3 enum value deleted",
+      "path": "/test/",
+      "method": "get",
+      "param": "enumParam",
+      "arrayName": "enumParam",
+      "arrayValue": "Value3"
+    }
+  ],
+  "smooths": [],
+  "unmatchDiffs": []
+}
diff --git a/test/rules/smooth/add-array-value/0-new.json b/test/rules/smooth/add-array-value/0-new.json
new file mode 100644
index 0000000..cbce540
--- /dev/null
+++ b/test/rules/smooth/add-array-value/0-new.json
@@ -0,0 +1,24 @@
+{
+  "swagger": "2.0",
+  "info": {
+    "version": "1.0.0",
+    "title": "Test API"
+  },
+  "paths": {},
+  "definitions": {
+    "Definition.Path.Name": {
+      "type": "object",
+      "properties": {
+          "EnumProperty": {
+            "enum": [
+                "Value1",
+                "Value2",
+                "Value3",
+                "Value4"
+            ],
+            "type": "string"
+          }
+      }
+    }
+  }
+}
diff --git a/test/rules/smooth/add-array-value/0-old.json b/test/rules/smooth/add-array-value/0-old.json
new file mode 100644
index 0000000..c2eb6ac
--- /dev/null
+++ b/test/rules/smooth/add-array-value/0-old.json
@@ -0,0 +1,23 @@
+{
+  "swagger": "2.0",
+  "info": {
+    "version": "1.0.0",
+    "title": "Test API"
+  },
+  "paths": {},
+  "definitions": {
+    "Definition.Path.Name": {
+      "type": "object",
+      "properties": {
+          "EnumProperty": {
+            "enum": [
+                "Value1",
+                "Value2",
+                "Value3"
+            ],
+            "type": "string"
+          }
+      }
+    }
+  }
+}
diff --git a/test/rules/smooth/add-array-value/0-output.json b/test/rules/smooth/add-array-value/0-output.json
new file mode 100644
index 0000000..86125b0
--- /dev/null
+++ b/test/rules/smooth/add-array-value/0-output.json
@@ -0,0 +1,14 @@
+{
+  "breaks": [],
+  "smooths": [
+    {
+      "ruleId": "add-array-value",
+      "message": "definitions/Definition.Path.Name/properties - Object property - EnumProperty.Value4 enum value added",
+      "path": "definitions/Definition.Path.Name/properties",
+      "property": "EnumProperty",
+      "arrayName": "EnumProperty",
+      "arrayValue": "Value4"
+    }
+  ],
+  "unmatchDiffs": []
+}
diff --git a/test/rules/smooth/add-array-value/1-new.json b/test/rules/smooth/add-array-value/1-new.json
new file mode 100644
index 0000000..4311768
--- /dev/null
+++ b/test/rules/smooth/add-array-value/1-new.json
@@ -0,0 +1,27 @@
+{
+  "swagger": "2.0",
+  "info": {
+    "version": "1.0.0",
+    "title": "Test API"
+  },
+  "paths": {
+    "/test/": {
+      "get": {
+        "parameters": [
+          {
+              "name": "enumParam",
+              "in": "query",
+              "required": false,
+              "type": "string",
+              "enum": [
+                  "Value1",
+                  "Value2",
+                  "Value3",
+                  "Value4"
+              ]
+          }
+        ]
+      }
+    }
+  }
+}
diff --git a/test/rules/smooth/add-array-value/1-old.json b/test/rules/smooth/add-array-value/1-old.json
new file mode 100644
index 0000000..e33b813
--- /dev/null
+++ b/test/rules/smooth/add-array-value/1-old.json
@@ -0,0 +1,26 @@
+{
+  "swagger": "2.0",
+  "info": {
+    "version": "1.0.0",
+    "title": "Test API"
+  },
+  "paths": {
+    "/test/": {
+      "get": {
+        "parameters": [
+          {
+              "name": "enumParam",
+              "in": "query",
+              "required": false,
+              "type": "string",
+              "enum": [
+                  "Value1",
+                  "Value2",
+                  "Value3"
+              ]
+          }
+        ]
+      }
+    }
+  }
+}
diff --git a/test/rules/smooth/add-array-value/1-output.json b/test/rules/smooth/add-array-value/1-output.json
new file mode 100644
index 0000000..e2bdcb6
--- /dev/null
+++ b/test/rules/smooth/add-array-value/1-output.json
@@ -0,0 +1,15 @@
+{
+  "breaks": [],
+  "smooths": [
+    {
+      "ruleId": "add-array-value",
+      "message": "/test/ (get) - param enumParam - enumParam.Value4 enum value added",
+      "path": "/test/",
+      "method": "get",
+      "param": "enumParam",
+      "arrayName": "enumParam",
+      "arrayValue": "Value4"
+    }
+  ],
+  "unmatchDiffs": []
+}