diff --git a/src/harness/unittests/tsserverProjectSystem.ts b/src/harness/unittests/tsserverProjectSystem.ts
index e5b2d325411..fb91aa9a431 100644
--- a/src/harness/unittests/tsserverProjectSystem.ts
+++ b/src/harness/unittests/tsserverProjectSystem.ts
@@ -22,7 +22,7 @@ namespace ts.projectSystem {
         content: JSON.stringify({
             "jquery": {
                 // jquery files can have names like "jquery-1.10.2.min.js" (or "jquery.intellisense.js")
-                "match": "/jquery(-(\\.\\d+)+)?(\\.intellisense)?(\\.min)?\\.js$",
+                "match": "/jquery(-(\\.?\\d+)+)?(\\.intellisense)?(\\.min)?\\.js$",
                 "types": ["jquery"]
             },
             "WinJS": {
@@ -3793,4 +3793,4 @@ namespace ts.projectSystem {
             assert.isUndefined(project.getCompilerOptions().maxNodeModuleJsDepth);
         });
     });
-}
\ No newline at end of file
+}