diff --git a/src/fpu/postproc/cvtshiftcalc.sv b/src/fpu/postproc/cvtshiftcalc.sv
index 77b8543fd..128f52253 100644
--- a/src/fpu/postproc/cvtshiftcalc.sv
+++ b/src/fpu/postproc/cvtshiftcalc.sv
@@ -98,6 +98,6 @@ module cvtshiftcalc import cvw::*;  #(parameter cvw_t P) (
   // determine if the result underflows ??? -> fp
   //      - if the first 1 is shifted out of the result then the result underflows
   //      - can't underflow an integer to fp conversions
-  assign CvtResUf = ($signed(CvtCe) < $signed({{P.NE-$clog2(P.NF){1'b1}}, ResNegNF}))&~XZero; // dh &~IntToFp not necessary because integer to float conversion never underflows
+  assign CvtResUf = ($signed(CvtCe) < $signed({{P.NE-$clog2(P.NF){1'b1}}, ResNegNF}))&~XZero&~IntToFp; 
   
 endmodule