diff --git a/packages/client/src/client.js b/packages/client/src/client.js
index 6ef451c00..5d49a7d0f 100644
--- a/packages/client/src/client.js
+++ b/packages/client/src/client.js
@@ -134,7 +134,8 @@ function parseVisualConfigFromEnv(log) {
   validateBoolean(visualConfig.compareWithPreviousRun, 'compareWithPreviousRun');
   validateBoolean(visualConfig.diffIgnoreEnabled, 'diffIgnoreEnabled');
   validateNumberInRange(visualConfig.diffIgnorePercentage, 'diffIgnorePercentage');
-  validateIntegerRange(visualConfig.diffSensitivity, 'diffSensitivity', 1, 5);
+  // 0-indexed like the project setting: 0 = Very Strict ... 4 = Very Relaxed
+  validateIntegerRange(visualConfig.diffSensitivity, 'diffSensitivity', 0, 4);
 
   if (visualConfig.browsers != null) {
     if (!Array.isArray(visualConfig.browsers) || !visualConfig.browsers.every(b => typeof b === 'string')) {
diff --git a/packages/client/test/client.test.js b/packages/client/test/client.test.js
index baefb4e38..937bc91bd 100644
--- a/packages/client/test/client.test.js
+++ b/packages/client/test/client.test.js
@@ -769,13 +769,30 @@ describe('PercyClient', () => {
         .toBeRejectedWithError('Invalid PERCY_VISUAL_CONFIG: value must be valid JSON');
     });
 
+    it('accepts diffSensitivity 0 (Very Strict)', async () => {
+      process.env.PERCY_VISUAL_CONFIG = JSON.stringify({ diffSensitivity: 0 });
+
+      await expectAsync(client.createBuild({ projectType: 'web' })).toBeResolved();
+
+      expect(api.requests['/builds'][0].body.data.attributes['visual-config'])
+        .toEqual({ diffSensitivity: 0 });
+    });
+
     it('throws when PERCY_VISUAL_CONFIG contains invalid types', async () => {
       process.env.PERCY_VISUAL_CONFIG = JSON.stringify({
         diffSensitivity: 'high'
       });
 
       await expectAsync(client.createBuild({ projectType: 'web' })).toBeRejectedWithError(
-        "Invalid PERCY_VISUAL_CONFIG: 'diffSensitivity' must be an integer between 1 and 5"
+        "Invalid PERCY_VISUAL_CONFIG: 'diffSensitivity' must be an integer between 0 and 4"
+      );
+    });
+
+    it('throws when PERCY_VISUAL_CONFIG diffSensitivity is out of range', async () => {
+      process.env.PERCY_VISUAL_CONFIG = JSON.stringify({ diffSensitivity: 5 });
+
+      await expectAsync(client.createBuild({ projectType: 'web' })).toBeRejectedWithError(
+        "Invalid PERCY_VISUAL_CONFIG: 'diffSensitivity' must be an integer between 0 and 4"
       );
     });