diff --git a/src/ifu/decompress.sv b/src/ifu/decompress.sv
index b28a9e7be..f0882ddf7 100644
--- a/src/ifu/decompress.sv
+++ b/src/ifu/decompress.sv
@@ -126,7 +126,7 @@ module decompress (
                       InstrD = {7'b0000000, rs2p, rds1p, 3'b110, rds1p, 7'b0110011}; // c.or
                     else // if (instr16[6:5] == 2'b11) 
                       InstrD = {7'b0000000, rs2p, rds1p, 3'b111, rds1p, 7'b0110011}; // c.and
-                  else if (instr16[12:10] == 3'b111 & `XLEN > 32)
+                  else if (`XLEN > 32) //if (instr16[12:10] == 3'b111) full truth table no need to check [12:10] 
                     if (instr16[6:5] == 2'b00)
                       InstrD = {7'b0100000, rs2p, rds1p, 3'b000, rds1p, 7'b0111011}; // c.subw
                     else if (instr16[6:5] == 2'b01)