diff --git a/utils/osmo-config-merge.c b/utils/osmo-config-merge.c
index 131486c..3762c67 100644
--- a/utils/osmo-config-merge.c
+++ b/utils/osmo-config-merge.c
@@ -145,7 +145,8 @@
 			/* new child to last node */
 			n = node_alloc_child(last);
 		} else if (indent < cur_indent) {
-			for (int i = 0; i < cur_indent - indent; i++) {
+			int i;
+			for (i = 0; i < cur_indent - indent; i++) {
 				/* go to parent, add another sibling */
 				if (last->parent)
 					last = last->parent;
@@ -202,7 +203,8 @@
 
 	if (root->line) {
 		if (print_node_depth) {
-			for (int i = 0; i < level; i++)
+			int i;
+			for (i = 0; i < level; i++)
 				fputc('*', out);
 		}