diff --git a/src/pdch_ul_controller.c b/src/pdch_ul_controller.c
index 7fbbc51..1cdbb98 100644
--- a/src/pdch_ul_controller.c
+++ b/src/pdch_ul_controller.c
@@ -299,7 +299,7 @@
 	int res;
 
 	struct rb_node *first;
-	while((first = rb_first(&ulc->tree_root))) {
+	while ((first = rb_first(&ulc->tree_root))) {
 		item = container_of(first, struct pdch_ulc_node, node);
 		res = fn_cmp(item->fn, fn);
 		if (res > 0) /* item->fn AFTER fn */