diff --git a/src/server/protocol.ts b/src/server/protocol.ts
index ac4d5a9bf0c..9f34da8651d 100644
--- a/src/server/protocol.ts
+++ b/src/server/protocol.ts
@@ -2090,7 +2090,7 @@ namespace ts.server.protocol {
          * If true, this completion was generated from traversing the name table of an unchecked JS file,
          * and therefore may not be accurate.
          */
-        isUncheckedCompletion?: true;
+        isFromUncheckedFile?: true;
     }
 
     /**
diff --git a/src/services/completions.ts b/src/services/completions.ts
index b97dabfb32f..e99170009ed 100644
--- a/src/services/completions.ts
+++ b/src/services/completions.ts
@@ -311,7 +311,7 @@ namespace ts.Completions {
                     kind: ScriptElementKind.warning,
                     kindModifiers: "",
                     sortText: SortText.JavascriptIdentifiers,
-                    isUncheckedCompletion: true
+                    isFromUncheckedFile: true
                 });
             }
         });
diff --git a/src/services/types.ts b/src/services/types.ts
index 82a90afa12c..89c8c188ce1 100644
--- a/src/services/types.ts
+++ b/src/services/types.ts
@@ -988,7 +988,7 @@ namespace ts {
         hasAction?: true;
         source?: string;
         isRecommended?: true;
-        isUncheckedCompletion?: true;
+        isFromUncheckedFile?: true;
     }
 
     export interface CompletionEntryDetails {
diff --git a/tests/baselines/reference/api/tsserverlibrary.d.ts b/tests/baselines/reference/api/tsserverlibrary.d.ts
index 5ca50db8067..ec3ab954751 100644
--- a/tests/baselines/reference/api/tsserverlibrary.d.ts
+++ b/tests/baselines/reference/api/tsserverlibrary.d.ts
@@ -5652,6 +5652,7 @@ declare namespace ts {
         hasAction?: true;
         source?: string;
         isRecommended?: true;
+        isFromUncheckedFile?: true;
     }
     interface CompletionEntryDetails {
         name: string;
@@ -7644,6 +7645,11 @@ declare namespace ts.server.protocol {
          * Then either that enum/class or a namespace containing it will be the recommended symbol.
          */
         isRecommended?: true;
+        /**
+         * If true, this completion was generated from traversing the name table of an unchecked JS file,
+         * and therefore may not be accurate.
+         */
+        isFromUncheckedFile?: true;
     }
     /**
      * Additional completion entry details, available on demand
diff --git a/tests/baselines/reference/api/typescript.d.ts b/tests/baselines/reference/api/typescript.d.ts
index 1143d4c6ebc..b0f592c95ef 100644
--- a/tests/baselines/reference/api/typescript.d.ts
+++ b/tests/baselines/reference/api/typescript.d.ts
@@ -5652,6 +5652,7 @@ declare namespace ts {
         hasAction?: true;
         source?: string;
         isRecommended?: true;
+        isFromUncheckedFile?: true;
     }
     interface CompletionEntryDetails {
         name: string;