diff --git a/Jakefile.js b/Jakefile.js
index b7382d69a4a..0c4957505ad 100644
--- a/Jakefile.js
+++ b/Jakefile.js
@@ -159,6 +159,8 @@ compileOutputConfigFile('src/tsserverLibrary/tsconfig.json', [], [], function ()
         "\nexport = ts;" +
         "\nexport as namespace ts;";
     tsserverLibraryDefinitionFileContents = removeConstModifierFromEnumDeclarations(tsserverLibraryDefinitionFileContents);
+    // Normalize line endings
+    tsserverLibraryDefinitionFileContents = tsserverLibraryDefinitionFile.replace(/\r\n/g, "\n");
 
     fs.writeFileSync(tsserverLibraryDefinitionFile, tsserverLibraryDefinitionFileContents);
 });