diff --git a/appveyor.yml b/appveyor.yml
index df49fcf0..a76e14e3 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -41,7 +41,7 @@ build_script:
 
     echo MSYSTEM=%MSYSTEM%
 
-    c:\msys64\usr\bin\bash -lc "cc=%cc% make USE_UPNP=YES"
+    c:\msys64\usr\bin\bash -lc "export CC=%cc% && make USE_UPNP=YES -j2"
 
     7z a -tzip -mx9 -mmt i2pd-mingw-win%bitness%.zip i2pd.exe