diff --git a/data_from_portwine/scripts/functions_helper b/data_from_portwine/scripts/functions_helper
index 43c51b9..4e8e630 100755
--- a/data_from_portwine/scripts/functions_helper
+++ b/data_from_portwine/scripts/functions_helper
@@ -3266,7 +3266,9 @@ start_portwine () {
     fi
 
     #https://github.com/flathub/net.lutris.Lutris/pull/368#issuecomment-1751381312
-    if [[ (echo $PW_GPU_USE | grep -i nvidia) ]] || [[ $(glxinfo | grep "OpenGL renderer" | grep -i nvidia) ]]; then
+    if [[ "${PW_GPU_USE,,}" =~ nvidia ]] \
+    || [[ $(glxinfo | grep "OpenGL renderer" | grep -i nvidia) ]]
+    then
     	export WEBKIT_DISABLE_DMABUF_RENDERER=1
     fi