diff --git a/support/scripts/apply-patches.sh b/support/scripts/apply-patches.sh
index ff72b4524..37f2d810c 100755
--- a/support/scripts/apply-patches.sh
+++ b/support/scripts/apply-patches.sh
@@ -92,7 +92,7 @@ function apply_patch {
 }
 
 function scan_patchdir {
-    path=$1
+    local path=$1
     shift 1
     patches=${@-*}