diff --git a/nuget/bootstrap.less.nuspec b/nuget/bootstrap.less.nuspec
index 7d69099f3a..85134ef499 100644
--- a/nuget/bootstrap.less.nuspec
+++ b/nuget/bootstrap.less.nuspec
@@ -21,7 +21,7 @@
 	<tags>css js less mobile-first responsive front-end framework web</tags>
   </metadata>
   <files>
-    <file src="less\**\*.*" target="content\Content\bootstrap" />
+    <file src="less\**\*.less" target="content\Content\bootstrap" />
     <file src="fonts\*.*" target="content\Content\fonts" />
     <file src="dist\js\bootstrap*.js" target="content\Scripts" />
   </files>