diff --git a/src/server/scriptInfo.ts b/src/server/scriptInfo.ts
index 0a7a339e5f436..335e283276c10 100644
--- a/src/server/scriptInfo.ts
+++ b/src/server/scriptInfo.ts
@@ -270,7 +270,6 @@ namespace ts.server {
         }
     }
 
-    /*@internal*/
     export function isDynamicFileName(fileName: NormalizedPath) {
         return fileName[0] === "^" ||
             ((stringContains(fileName, "walkThroughSnippet:/") || stringContains(fileName, "untitled:/")) &&
diff --git a/tests/baselines/reference/api/tsserverlibrary.d.ts b/tests/baselines/reference/api/tsserverlibrary.d.ts
index 22d6234d13d6b..2dfe481afba18 100644
--- a/tests/baselines/reference/api/tsserverlibrary.d.ts
+++ b/tests/baselines/reference/api/tsserverlibrary.d.ts
@@ -8757,6 +8757,7 @@ declare namespace ts.server {
         svc: number;
         text: number;
     }
+    function isDynamicFileName(fileName: NormalizedPath): boolean;
     class ScriptInfo {
         private readonly host;
         readonly fileName: NormalizedPath;