diff --git a/config/graphic b/config/graphic
index 69c0149a14..4af039f6e4 100644
--- a/config/graphic
+++ b/config/graphic
@@ -100,4 +100,7 @@ get_graphicdrivers() {
   # remove leading comma if present
   [[ $GALLIUM_DRIVERS =~ ^, ]] && GALLIUM_DRIVERS="${GALLIUM_DRIVERS:1}"
   [[ $DRI_DRIVERS =~ ^, ]] && DRI_DRIVERS="${DRI_DRIVERS:1}"
+
+  # remove duplicate entries
+  XORG_DRIVERS="$(echo $XORG_DRIVERS | xargs -n1 | sort -u | xargs)"
 }