diff --git a/.appveyor.yml b/.appveyor.yml
index dce946ae..c863e0f3 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -25,7 +25,7 @@ build_script:
 - cmd: |-
     lrelease gpxsee.pro
     qmake gpxsee.pro
-    jom release
+    jom /J 2 release
 
     md installer
     copy release\GPXSee.exe installer