diff --git a/gc.c b/gc.c
index c9bcad4..0e5fb74 100644
--- a/gc.c
+++ b/gc.c
@@ -4,7 +4,8 @@
 #include "vm.h"
 
 void mark(struct garbageObject *obj) {
-  if (obj->mark) return;
+  if (obj->mark)
+    return;
 
   ++obj->mark;
 
@@ -36,10 +37,8 @@ void sweep(struct virtualMachine *vm) {
   }
 }
 
-int collect(struct virtualMachine *vm) {
-  int count = vm->refCount;
+void collect(struct virtualMachine *vm) {
   markAll(vm);
   sweep(vm);
-  vm->refMax = vm->refCount * 2;
-  return count - vm->refCount;
+  vm->refMax = vm->refCount * 2 <= STACK_MAX ? vm->refCount * 2 : STACK_MAX;
 }
diff --git a/gc.h b/gc.h
index f2320dc..794afec 100644
--- a/gc.h
+++ b/gc.h
@@ -13,6 +13,6 @@ void markAll(struct virtualMachine *vm);
 void sweep(struct virtualMachine *vm);
 
 // Marks and Sweeps all references
-int collect(struct virtualMachine *vm);
+void collect(struct virtualMachine *vm);
 
 #endif /* GC_H */