diff --git a/appveyor.yml b/appveyor.yml
index 99d0591..f6b7c95 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -19,7 +19,7 @@ configuration:
   - Release
 
 after_build:
-  - cmd: "C:\Program Files (x86)\Inno Setup 6\ISCC.exe" "Windows\Setup\MassiveKnobSetup.iss"
+  - cmd: "\"C:\\Program Files (x86)\\Inno Setup 6\\ISCC.exe\" \"Windows\\Setup\\MassiveKnobSetup.iss\""
 
 deploy:
   provider: GitHub