diff --git a/src/GraphQL.FluentValidation/ValidationMiddleware.cs b/src/GraphQL.FluentValidation/ValidationMiddleware.cs
index 871a027d..41d70c60 100644
--- a/src/GraphQL.FluentValidation/ValidationMiddleware.cs
+++ b/src/GraphQL.FluentValidation/ValidationMiddleware.cs
@@ -26,7 +26,8 @@ static ExecutionError ToExecutionError(ValidationFailure failure)
     {
         return new($"{failure.PropertyName}: {failure.ErrorMessage}")
         {
-            Path = new List<string> {failure.PropertyName}
+            Path = new List<string> {failure.PropertyName},
+            Code = failure.ErrorCode
         };
     }
 }
\ No newline at end of file
diff --git a/src/Tests/IntegrationTests.AsyncComplexInvalid.verified.txt b/src/Tests/IntegrationTests.AsyncComplexInvalid.verified.txt
index c1901725..0446fcd9 100644
--- a/src/Tests/IntegrationTests.AsyncComplexInvalid.verified.txt
+++ b/src/Tests/IntegrationTests.AsyncComplexInvalid.verified.txt
@@ -4,13 +4,25 @@
       "message": "Inner: Inner async test failed msg.",
       "path": [
         "Inner"
-      ]
+      ],
+      "extensions": {
+        "code": "AsyncPredicateValidator",
+        "codes": [
+          "AsyncPredicateValidator"
+        ]
+      }
     },
     {
       "message": "Inner.Content: 'Content' must not be empty.",
       "path": [
         "Inner.Content"
-      ]
+      ],
+      "extensions": {
+        "code": "NotEmptyValidator",
+        "codes": [
+          "NotEmptyValidator"
+        ]
+      }
     }
   ],
   "data": {
diff --git a/src/Tests/IntegrationTests.AsyncInvalid.verified.txt b/src/Tests/IntegrationTests.AsyncInvalid.verified.txt
index ee0caad3..c8f29a25 100644
--- a/src/Tests/IntegrationTests.AsyncInvalid.verified.txt
+++ b/src/Tests/IntegrationTests.AsyncInvalid.verified.txt
@@ -4,7 +4,13 @@
       "message": "Content: The specified condition was not met for 'Content'.",
       "path": [
         "Content"
-      ]
+      ],
+      "extensions": {
+        "code": "AsyncPredicateValidator",
+        "codes": [
+          "AsyncPredicateValidator"
+        ]
+      }
     }
   ],
   "data": {
diff --git a/src/Tests/IntegrationTests.ComplexInvalid.verified.txt b/src/Tests/IntegrationTests.ComplexInvalid.verified.txt
index 905291a1..9969ca3f 100644
--- a/src/Tests/IntegrationTests.ComplexInvalid.verified.txt
+++ b/src/Tests/IntegrationTests.ComplexInvalid.verified.txt
@@ -4,13 +4,25 @@
       "message": "Inner.Content: 'Content' must not be empty.",
       "path": [
         "Inner.Content"
-      ]
+      ],
+      "extensions": {
+        "code": "NotEmptyValidator",
+        "codes": [
+          "NotEmptyValidator"
+        ]
+      }
     },
     {
       "message": "Items: 'Items' must not be empty.",
       "path": [
         "Items"
-      ]
+      ],
+      "extensions": {
+        "code": "NotEmptyValidator",
+        "codes": [
+          "NotEmptyValidator"
+        ]
+      }
     }
   ],
   "data": {
diff --git a/src/Tests/IntegrationTests.ComplexInvalid2.verified.txt b/src/Tests/IntegrationTests.ComplexInvalid2.verified.txt
index 96510fe4..ec4ebb05 100644
--- a/src/Tests/IntegrationTests.ComplexInvalid2.verified.txt
+++ b/src/Tests/IntegrationTests.ComplexInvalid2.verified.txt
@@ -4,13 +4,25 @@
       "message": "Inner: 'Inner' must not be empty.",
       "path": [
         "Inner"
-      ]
+      ],
+      "extensions": {
+        "code": "NotEmptyValidator",
+        "codes": [
+          "NotEmptyValidator"
+        ]
+      }
     },
     {
       "message": "Items: 'Items' must not be empty.",
       "path": [
         "Items"
-      ]
+      ],
+      "extensions": {
+        "code": "NotEmptyValidator",
+        "codes": [
+          "NotEmptyValidator"
+        ]
+      }
     }
   ],
   "data": {
diff --git a/src/Tests/IntegrationTests.DerivedComplexInvalid.verified.txt b/src/Tests/IntegrationTests.DerivedComplexInvalid.verified.txt
index c19b17a2..b103127b 100644
--- a/src/Tests/IntegrationTests.DerivedComplexInvalid.verified.txt
+++ b/src/Tests/IntegrationTests.DerivedComplexInvalid.verified.txt
@@ -4,13 +4,25 @@
       "message": "Inner.Content: 'Content' must not be empty.",
       "path": [
         "Inner.Content"
-      ]
+      ],
+      "extensions": {
+        "code": "NotEmptyValidator",
+        "codes": [
+          "NotEmptyValidator"
+        ]
+      }
     },
     {
       "message": "Items: 'Items' must not be empty.",
       "path": [
         "Items"
-      ]
+      ],
+      "extensions": {
+        "code": "NotEmptyValidator",
+        "codes": [
+          "NotEmptyValidator"
+        ]
+      }
     }
   ],
   "data": {
diff --git a/src/Tests/IntegrationTests.Invalid.verified.txt b/src/Tests/IntegrationTests.Invalid.verified.txt
index bef250cb..e40f8bcd 100644
--- a/src/Tests/IntegrationTests.Invalid.verified.txt
+++ b/src/Tests/IntegrationTests.Invalid.verified.txt
@@ -4,7 +4,13 @@
       "message": "Content: 'Content' must not be empty.",
       "path": [
         "Content"
-      ]
+      ],
+      "extensions": {
+        "code": "NotEmptyValidator",
+        "codes": [
+          "NotEmptyValidator"
+        ]
+      }
     }
   ],
   "data": {