diff --git a/pipelined/testbench/tests.vh b/pipelined/testbench/tests.vh
index db5375fe..c4484c8c 100644
--- a/pipelined/testbench/tests.vh
+++ b/pipelined/testbench/tests.vh
@@ -1322,7 +1322,7 @@ string imperas32f[] = '{
     "rv32i_m/F/fmsub_b15-01", "19bb30",
     "rv32i_m/F/fmsub_b16-01", "39d0",
     "rv32i_m/F/fmsub_b17-01", "39d0",
-    // "rv32i_m/F/fmsub_b18-01", "42d0", // test looks fine to me: 7e9db2ee (large number) * -0 - f1bffff8 = f1bffff8 but wants 7f800000 (NaN)
+    "rv32i_m/F/fmsub_b18-01", "4d20", // test looks fine to me: 7e9db2ee (large number) * -0 - f1bffff8 = f1bffff8 but wants 7f800000 (NaN)
     "rv32i_m/F/fmsub_b2-01", "4d60",
     "rv32i_m/F/fmsub_b3-01", "d4f0",
     "rv32i_m/F/fmsub_b4-01", "3700",