diff --git a/src/main/scala/xiangshan/backend/fu/fpu/FDivSqrt.scala b/src/main/scala/xiangshan/backend/fu/fpu/FDivSqrt.scala
index 5b2cde92df4a2aebea3e1ba9500492f71d5bbc1b..0e57bd851b385ced46ecfa4ba3257346d8900b3c 100644
--- a/src/main/scala/xiangshan/backend/fu/fpu/FDivSqrt.scala
+++ b/src/main/scala/xiangshan/backend/fu/fpu/FDivSqrt.scala
@@ -38,7 +38,9 @@ class FDivSqrt extends FPUSubModule {
       }
     }
     is(s_finish){
-      state := s_idle
+      when(io.out.fire() || kill){
+        state := s_idle
+      }
     }
   }