diff --git a/src/compiler/sourcemap.ts b/src/compiler/sourcemap.ts
index ed75cf081d9..e3aebc849b6 100644
--- a/src/compiler/sourcemap.ts
+++ b/src/compiler/sourcemap.ts
@@ -322,7 +322,8 @@ namespace ts {
     }
 
     // Sometimes tools can see the following line as a source mapping url comment, so we mangle it a bit (the [M])
-    const sourceMapCommentRegExp = /^\/\/[@#] source[M]appingURL=(.+)$/;
+    const sourceMapCommentRegExp = /^\/\/[@#] source[M]appingURL=(.+)\r?\n?$/;
+
     const whitespaceOrMapCommentRegExp = /^\s*(\/\/[@#] .*)?$/;
 
     export interface LineInfo {