diff --git a/src/main/scala/backBoard/shin/MstSlvSwitch.scala b/src/main/scala/backBoard/shin/MstSlvSwitch.scala
index 58721e8..017c350 100644
--- a/src/main/scala/backBoard/shin/MstSlvSwitch.scala
+++ b/src/main/scala/backBoard/shin/MstSlvSwitch.scala
@@ -456,13 +456,13 @@ trait MstSlvSwitchWatchDog{ this: MstSlvSwitchBase =>
   for( i <- 0 until 8 ){
     when( smUnit(i).io.enq ){
       isWdtSMEnable(2*i) := false.B
-    } .elsewhen( ~isWdtSMEnable(2*i) & smUnit(i).io.sram_w.enw & interface.io.cReg.wdtEnable.extract(i+1) ){
+    } .elsewhen( ~isWdtSMEnable(2*i) & smUnit(i).io.sram_w.enw & interface.io.cReg.wdtEnable.extract(2*i+1) ){
       isWdtSMEnable(2*i) := true.B
     }
 
-    when( smUnit(i).io.deq ){
+    when( smUnit(i).io.deq  ){ 
       isWdtSMEnable(2*i + 1) := false.B
-    } .elsewhen( ~isWdtSMEnable(2*i + 1) & smUnit(i).io.sram_r.enr & interface.io.cReg.wdtEnable.extract(i+1) ){
+    } .elsewhen( ~isWdtSMEnable(2*i + 1) & smUnit(i).io.sram_r.enr & interface.io.cReg.wdtEnable.extract(2*i+2) ){
       isWdtSMEnable(2*i + 1) := true.B
     }
   }