diff --git a/src/fpu/fdivsqrt/fdivsqrtexpcalc.sv b/src/fpu/fdivsqrt/fdivsqrtexpcalc.sv
index b5b2ba33..482fed84 100644
--- a/src/fpu/fdivsqrt/fdivsqrtexpcalc.sv
+++ b/src/fpu/fdivsqrt/fdivsqrtexpcalc.sv
@@ -69,6 +69,6 @@ module fdivsqrtexpcalc(
   assign SExp  = {SXExp[`NE+1], SXExp[`NE+1:1]} + {2'b0, Bias};
   
   // correct exponent for subnormal input's normalization shifts
-  assign DExp  = ({2'b0, Xe} - {{(`NE+1-`DIVBLEN){1'b0}}, ell} - {2'b0, Ye} + {{(`NE+1-`DIVBLEN){1'b0}}, m} + {3'b0, Bias}) & {`NE+2{~XZero}}; // *** why Xzero?  Is this a hack for postprocessor?
+  assign DExp  = ({2'b0, Xe} - {{(`NE+1-`DIVBLEN){1'b0}}, ell} - {2'b0, Ye} + {{(`NE+1-`DIVBLEN){1'b0}}, m} + {3'b0, Bias}); 
   assign Qe = Sqrt ? SExp : DExp;
 endmodule