diff --git a/src/lj_snap.c b/src/lj_snap.c
index 89f73982..10fd6af7 100644
--- a/src/lj_snap.c
+++ b/src/lj_snap.c
@@ -352,7 +352,7 @@ const BCIns *lj_snap_restore(jit_State *J, void *exptr)
   setcframe_pc(cframe_raw(L->cframe), pc+1);
 
   /* Make sure the stack is big enough for the slots from the snapshot. */
-  if (LJ_UNLIKELY(L->base + snap->topslot > tvref(L->maxstack))) {
+  if (LJ_UNLIKELY(L->base + snap->topslot >= tvref(L->maxstack))) {
     L->top = curr_topL(L);
     lj_state_growstack(L, snap->topslot - curr_proto(L)->framesize);
   }