diff --git a/.github/workflows/cmake-multi-platform.yml b/.github/workflows/cmake-multi-platform.yml
index 763c171..78b10de 100644
--- a/.github/workflows/cmake-multi-platform.yml
+++ b/.github/workflows/cmake-multi-platform.yml
@@ -80,7 +80,7 @@ jobs:
         
     - name: (2b) Build UG4
       run: |
-        cmake -B ug4-git/build -S ug4-git -DTARGET=libgrid -DSTATIC_BUILD=ON -DCMAKE_BUILD_TYPE=Release -DProMesh=ON -DLuaShell=ON -DPARALLEL=OFF -Dtetgen=ON 
+        cmake -B ug4-git/build -S ug4-git/ugcore -DTARGET=libgrid -DSTATIC_BUILD=ON -DCMAKE_BUILD_TYPE=Release -DProMesh=ON -DLuaShell=ON -DPARALLEL=OFF -Dtetgen=ON 
         cmake --build ug4-git/build