diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 4f1ac080e..e03a583da 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -55,7 +55,7 @@ jobs:
       run: curl -fLOSs --retry 3 http://olivevideoeditor.org/deps/turbojpeg-win.7z && 7z x turbojpeg-win.7z
   
     - name: Acquire zlib
-      run: curl -fLOSs --retry 3 http://olivevideoeditor.org/deps/zlib-win.7z && 7z x zlib-win.7z && set ZLIB_ROOT=%cd%
+      run: curl -fLOSs --retry 3 http://olivevideoeditor.org/deps/zlib-win.7z && 7z x zlib-win.7z
 
     - name: Configure CMake
       # Use a bash shell so we can use the same syntax for environment variable
@@ -65,7 +65,7 @@ jobs:
       # Note the current convention is to use the -S and -B options here to specify source 
       # and build directories, but this is only available with CMake 3.13 and higher.  
       # The CMake binaries on the Github Actions machines are (as of this writing) 3.12
-      run: PATH=$PATH:${{runner.workspace}} cmake $GITHUB_WORKSPACE -DCMAKE_BUILD_TYPE=$BUILD_TYPE -G "Ninja"
+      run: export ZLIB_ROOT=$GITHUB_WORKSPACE && cmake $GITHUB_WORKSPACE -DCMAKE_BUILD_TYPE=$BUILD_TYPE -G "Ninja"
 
     - name: Build
       working-directory: ${{runner.workspace}}/build