diff --git a/config/shared/test-shared.vh b/config/shared/test-shared.vh
index 04961071f..96ef1e929 100644
--- a/config/shared/test-shared.vh
+++ b/config/shared/test-shared.vh
@@ -93,7 +93,7 @@ localparam FMT2  = ((F_SUPPORTED & (LEN1 != S_LEN)) ? 2'd0    : 2'd2);
 localparam BIAS2 = ((F_SUPPORTED & (LEN1 != S_LEN)) ? S_BIAS : H_BIAS);
 
 // division constants
-localparam DIVN        = (((NF<XLEN) & IDIV_ON_FPU) ? XLEN : NF+2); // standard length of input
+localparam DIVN        = (((NF+2<XLEN) & IDIV_ON_FPU) ? XLEN : NF+2); // standard length of input
 localparam LOGR        = ($clog2(RADIX));           // r = log(R)
 localparam RK          = (LOGR*DIVCOPIES);         // r*k used for intdiv preproc
 localparam LOGRK       = ($clog2(RK));               // log2(r*k)
@@ -116,4 +116,4 @@ localparam CORRSHIFTSZ = (((CVTLEN+NF+1)>(DIVb + 1 +NF+1) & (CVTLEN+NF+1)>(3*NF+
 
 /* verilator lint_off STMTDLY */
 /* verilator lint_off ASSIGNDLY */
-/* verilator lint_off PINCONNECTEMPTY */
\ No newline at end of file
+/* verilator lint_off PINCONNECTEMPTY */