diff --git a/.appveyor.yml b/.appveyor.yml
index ad709217..2d0c48c3 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -21,7 +21,7 @@ branches:
 
 init:
   - set PATH=%QT_PATH%;%PATH%
-  - call %VCVARSALL% %PLATFORM%
+  - call "%VCVARSALL%" %PLATFORM%
 
 before_build:
   - cd c:\dev\labrador\Desktop_Interface