diff --git a/libcpu/aarch64/common/mmu.c b/libcpu/aarch64/common/mmu.c
index 345396e8cf2617c0bbdd8229f9660d3a3852a4f6..b97eb1eb6bdc98402f3453c18801bd27ac1b2e28 100644
--- a/libcpu/aarch64/common/mmu.c
+++ b/libcpu/aarch64/common/mmu.c
@@ -109,6 +109,10 @@ static void _kenrel_unmap_4K(unsigned long *lv0_tbl, void *v_addr)
             }
             rt_pages_free(cur_page, 0);
         }
+        else
+        {
+            break;
+        }
         level--;
     }