diff --git a/wally-pipelined/src/privileged/privdec.sv b/wally-pipelined/src/privileged/privdec.sv
index 59ff536df..5e3581ff8 100644
--- a/wally-pipelined/src/privileged/privdec.sv
+++ b/wally-pipelined/src/privileged/privdec.sv
@@ -47,7 +47,7 @@ module privdec (
   assign wfiM =       PrivilegedM & (InstrM[31:20] == 12'b000100000101);
   assign sfencevmaM = PrivilegedM & (InstrM[31:25] ==  7'b0001001);
   assign IllegalPrivilegedInstrM = PrivilegedM & ~(uretM|sretM|mretM|ecallM|ebreakM|wfiM|sfencevmaM);
-  assign IllegalInstrFaultM = (IllegalIEUInstrFaultM & IllegalFPUInstrM) | IllegalPrivilegedInstrM | IllegalCSRAccessM | IllegalFPUInstrM; // *** generalize this for other instructions
+  assign IllegalInstrFaultM = IllegalIEUInstrFaultM | IllegalFPUInstrM | IllegalPrivilegedInstrM | IllegalCSRAccessM | IllegalFPUInstrM; // *** generalize this for other instructions
 
   // *** initially, wfi and sfencevma are nop
   // *** zfenci extension?