diff --git a/src/compiler/diagnosticMessages.json b/src/compiler/diagnosticMessages.json
index c848ebc3a1..93872e35aa 100644
--- a/src/compiler/diagnosticMessages.json
+++ b/src/compiler/diagnosticMessages.json
@@ -1279,10 +1279,6 @@
         "category": "Error",
         "code": 2417
     },
-    "Type name '{0}' in extends clause does not reference constructor function for '{0}'.": {
-        "category": "Error",
-        "code": 2419
-    },
     "Class '{0}' incorrectly implements interface '{1}'.": {
         "category": "Error",
         "code": 2420