diff --git a/pipelined/src/ifu/ifu.sv b/pipelined/src/ifu/ifu.sv
index d5e2e88b..5b42b411 100644
--- a/pipelined/src/ifu/ifu.sv
+++ b/pipelined/src/ifu/ifu.sv
@@ -140,7 +140,7 @@ module ifu (
   // WFI
   /////////////////////////////////////////////////////////////////////////////////////////////
 
-  assign wfiD = (InstrD[6:0] == 7'b111011 && InstrD[31:20] == 12'b000100000101); // WFI in decode stage
+  assign wfiD = (InstrD[6:0] == 7'b1110011 && InstrD[31:20] == 12'b000100000101); // WFI in decode stage
   assign InstrNextF = wfiD ? InstrD : PostSpillInstrRawF; // on WFI, keep replaying WFI
 
   ////////////////////////////////////////////////////////////////////////////////////////////////