diff --git a/src/main/scala/vexriscv/ip/DataCache.scala b/src/main/scala/vexriscv/ip/DataCache.scala
index 4ba1b42..8c1ce61 100644
--- a/src/main/scala/vexriscv/ip/DataCache.scala
+++ b/src/main/scala/vexriscv/ip/DataCache.scala
@@ -1059,7 +1059,7 @@ class DataCache(val p : DataCacheConfig, mmuParameter : MemoryTranslatorBusParam
     }
     io.cpu.redo setWhen(io.cpu.writeBack.isValid && (mmuRsp.refilling || consistancyHazard))
 
-    assert(!(io.cpu.writeBack.isValid && !io.cpu.writeBack.haltIt && io.cpu.writeBack.isStuck), "writeBack stuck by another plugin is not allowed")
+    assert(!(io.cpu.writeBack.isValid && !io.cpu.writeBack.haltIt && io.cpu.writeBack.isStuck), "writeBack stuck by another plugin is not allowed", ERROR)
   }
 
   val loader = new Area{