diff --git a/.appveyor.yml b/.appveyor.yml
index efc98f555..87aee9c97 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -39,7 +39,7 @@ build_script:
 - bash -lc "cd /c/projects/blis && ./configure %CONFIGURE_OPTS% --enable-threading=%THREADING% --enable-arg-max-hack --prefix=/c/blis %CONFIG%"
 - bash -lc "cd /c/projects/blis && mingw32-make -j4 V=1"
 - bash -lc "cd /c/projects/blis && mingw32-make install"
-- ps: Compress-Archive -Path C:\blis -DestinationPath C:\blis.zip
+- 7z a C:\blis.zip C:\blis
 - ps: Push-AppveyorArtifact C:\blis.zip
 
 test_script: