diff --git a/.github/actions/linux-build/action.yml b/.github/actions/linux-build/action.yml
index b3edb12ad..3a8fefd77 100644
--- a/.github/actions/linux-build/action.yml
+++ b/.github/actions/linux-build/action.yml
@@ -100,8 +100,8 @@ runs:
           -DCMAKE_CXX_COMPILER_LAUNCHER="ccache" \
           -DCMAKE_C_COMPILER_LAUNCHER="ccache" \
           -DBUILD_TESTING="ON" \
-          -DUSE_SCRIPTPCH=${{ inputs.pch && 'ON' || '' }} \
-          -DUSE_COREPCH=${{ inputs.pch && 'ON' || '' }} \
+          -DUSE_SCRIPTPCH=${{ inputs.pch == 'true' && 'ON' || '' }} \
+          -DUSE_COREPCH=${{ inputs.pch == 'true' && 'ON' || '' }} \
           ${{ !inputs.pch && '-DNOPCH=true' || '' }}
 
     - name: build