diff --git a/pkgs/build-support/wrapper-common/utils.bash b/pkgs/build-support/wrapper-common/utils.bash
index cb3552ebc54b..4658c9e74248 100644
--- a/pkgs/build-support/wrapper-common/utils.bash
+++ b/pkgs/build-support/wrapper-common/utils.bash
@@ -131,7 +131,7 @@ expandResponseParams() {
 }
 
 checkLinkType() {
-    local arg mode
+    local arg
     type="dynamic"
     for arg in "$@"; do
         if [[ "$arg" = -static ]]; then