diff --git a/appveyor.yml b/appveyor.yml
index e138216a8..b0d87d0cc 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -17,7 +17,7 @@ skip_tags: true
 #---------------------------------#
 
 environment:
-  DXSDK_DIR: C:\Program Files (x86)\Microsoft DirectX SDK
+  DXSDK_DIR: "C:/Program Files (x86)/Microsoft DirectX SDK/
   GH_TOKEN:
     secure: dYnBDQkiY5oVjIlswzBX9BJigNtBGXgGlp1tK3XbHzrDEDrs2vaKD5m+Oz5OSz1C