diff --git a/src/services/services.ts b/src/services/services.ts
index 90170ad0b3f..e5b10b8056f 100644
--- a/src/services/services.ts
+++ b/src/services/services.ts
@@ -3160,7 +3160,7 @@ module ts {
             var sourceFile = getSourceFile(fileName);
 
             var result: ClassifiedSpan[] = [];
-            processNode(sourceFile.getSourceFile());
+            processNode(sourceFile);
 
             return result;