diff --git a/cmake.opts b/cmake.opts
index f2093150490685a65b02eb10766375ea7e9b144d..140235eccb0f27243f6dc6bbbe72aedf56beb798 100644
--- a/cmake.opts
+++ b/cmake.opts
@@ -56,4 +56,5 @@ CMAKE_FLAGS="$SPECIFIC_COMPILER $SPECIFIC_GENERATOR $OPM_FLAGS
 -DCMAKE_BUILD_TYPE=Release
 -DENABLE_HEADERCHECK=$DUMUX_ENABLE_HEADERCHECK
 $DUMUX_ENABLE_PYTHON_BINDINGS
+$DUMUX_CMAKE_FLAGS
 "