diff --git a/faults.go b/faults.go
index 1c3fb5e..ff8d6f3 100644
--- a/faults.go
+++ b/faults.go
@@ -491,7 +491,7 @@ type MissingFailure struct {
 }
 
 func (e *MissingFailure) Error() string {
-	return "resource not found"
+	return maybeWrap(e.error, "resource not found").Error()
 }
 
 func (e *MissingFailure) Is(target error) bool {
@@ -508,7 +508,7 @@ type PermissionFailure struct {
 }
 
 func (e *PermissionFailure) Error() string {
-	return "permission denied"
+	return maybeWrap(e.error, "permission denied").Error()
 }
 
 func (e *PermissionFailure) Is(target error) bool {
diff --git a/faults_test.go b/faults_test.go
index 3b74e19..431dc30 100644
--- a/faults_test.go
+++ b/faults_test.go
@@ -508,6 +508,16 @@ func TestErrorMessage(t *testing.T) {
 			err:      faults.WithResourceExhausted(cause),
 			wantMsg:  "quota failure: underlying issue",
 		},
+		{
+			scenario: "WithNotFound wrapping a cause includes the cause in the message",
+			err:      faults.WithNotFound(cause),
+			wantMsg:  "resource not found: underlying issue",
+		},
+		{
+			scenario: "WithPermissionDenied wrapping a cause includes the cause in the message",
+			err:      faults.WithPermissionDenied(cause),
+			wantMsg:  "permission denied: underlying issue",
+		},
 	}
 
 	for _, tt := range tests {