diff --git a/t1/src/mask/MaskReduce.scala b/t1/src/mask/MaskReduce.scala
index c85388838..c02479189 100644
--- a/t1/src/mask/MaskReduce.scala
+++ b/t1/src/mask/MaskReduce.scala
@@ -149,7 +149,9 @@ class MaskReduce(parameter: T1Parameter) extends Module {
     cutUInt(reqReg.source2, parameter.datapathWidth)
   )
   val sourceValidCalculate: UInt =
-    reqReg.fpSourceValid.map(fv => Mux(floatType, fv & reqReg.sourceValid, fv)).getOrElse(reqReg.sourceValid)
+    reqReg.fpSourceValid.map(fv =>
+      Mux(floatType, fv & reqReg.sourceValid, reqReg.sourceValid)
+    ).getOrElse(reqReg.sourceValid)
   sourceValid := Mux1H(
     UIntToOH(crossFoldCount),
     sourceValidCalculate.asBools