diff --git a/scripts/makepkg.sh.in b/scripts/makepkg.sh.in
index 86f8a773..90486767 100644
--- a/scripts/makepkg.sh.in
+++ b/scripts/makepkg.sh.in
@@ -2385,7 +2385,7 @@ extract_global_var() {
 		array_build ref "$attr"
 		[[ ${ref[@]} ]] && array_build "$outputvar" "$attr"
 	else
-		[[ -v $attr ]] && printf -v "$outputvar" %s "${!attr}"
+		[[ ${!attr} ]] && printf -v "$outputvar" %s "${!attr}"
 	fi
 }