diff --git a/Jakefile.js b/Jakefile.js
index 398b897097d..beb16d2886f 100644
--- a/Jakefile.js
+++ b/Jakefile.js
@@ -544,7 +544,8 @@ compileFile(word2mdJs,
 // The generated spec.md; built for the 'generate-spec' task
 file(specMd, [word2mdJs, specWord], function () {
     var specWordFullPath = path.resolve(specWord);
-    var cmd = "cscript //nologo " + word2mdJs + ' "' + specWordFullPath + '" ' + specMd;
+    var specMDFullPath = path.resolve(specMd);
+    var cmd = "cscript //nologo " + word2mdJs + ' "' + specWordFullPath + '" ' + '"' + specMDFullPath + '"';
     console.log(cmd);
     child_process.exec(cmd, function () {
         complete();