diff --git a/lang/module.c b/lang/module.c
index f6b930e..8c16fa8 100644
--- a/lang/module.c
+++ b/lang/module.c
@@ -40,7 +40,7 @@
 
 // Checks if an info is in a stack
 static int in_stack(const ModuleInfo *info, struct module_stack *stack) {
-	for (int i = 0; i <= stack->top; ++i) {
+	for (int i = 0; i < stack->top; ++i) {
 		ModuleInfo *elem = stack->elems[i];
 		if (elem == info)
 			return 1;
@@ -74,8 +74,9 @@
 			use++;
 		}
 		if (*use == NULL) {
+			printf("visited %s\n", cur->name);
 			traversing.elems[traversing.top--] = NULL;
-			visited->elems[++visited->top] = cur;
+			visited->elems[visited->top++] = cur;
 		}
 	} while (traversing.top != -1);
 }