diff --git a/src/compiler/checker.ts b/src/compiler/checker.ts
index f16722b7c57..1d859cee660 100644
--- a/src/compiler/checker.ts
+++ b/src/compiler/checker.ts
@@ -4835,7 +4835,7 @@ namespace ts {
 
                 if (!message) {
                     message = relation === comparableRelation ?
-                        Diagnostics.Type_0_is_not_comparable_with_type_1 :
+                        Diagnostics.Type_0_is_not_comparable_to_type_1 :
                         Diagnostics.Type_0_is_not_assignable_to_type_1;
                 }
 
diff --git a/src/compiler/diagnosticMessages.json b/src/compiler/diagnosticMessages.json
index 4f1b4869918..c295a828175 100644
--- a/src/compiler/diagnosticMessages.json
+++ b/src/compiler/diagnosticMessages.json
@@ -888,7 +888,7 @@
         "category": "Error",
         "code": 2322
     },
-    "Type '{0}' is not comparable with type '{1}'.": {
+    "Type '{0}' is not comparable to type '{1}'.": {
         "category": "Error",
         "code": 2323
     },