diff --git a/appveyor.yml b/appveyor.yml
index 83b58b1..bccb4af 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -134,7 +134,7 @@ build_script:
   - copy %CMAKE_INSTALL_PREFIX%\bin\libexpat-1.dll
   - copy %CMAKE_INSTALL_PREFIX%\bin\libexiv2.dll
   - copy %CMAKE_INSTALL_PREFIX%\bin\libavif.dll
-  - copy %CMAKE_INSTALL_PREFIX%\bin\libzlib.dll
+  - copy %CMAKE_INSTALL_PREFIX%\bin\libz.dll
   - copy %CMAKE_INSTALL_PREFIX%\bin\libKF?Archive.dll
   - windeployqt %WINDEPLOYQT_ARGS% .\ppic.exe
 # copy 3rdparty licenses for the libs we vendored for windows...