diff --git a/.appveyor.yml b/.appveyor.yml
index 3dda5948..a50339ba 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -23,7 +23,7 @@ install:
   - "python -c \"import struct; print(struct.calcsize('P') * 8)\""
 
   # Install miktex
-  - "powershell C:\projects\patacrep\.appveyor.miktex.ps"
+  - "powershell C:/projects/patacrep/.appveyor.miktex.ps"
 
   - cmd: dir %LOCALAPPDATA%
   - cmd: dir %LOCALAPPDATA%\MiKTeX