diff --git a/src/base/fenv.c b/src/base/fenv.c
index 269913a60..2ec2f796f 100644
--- a/src/base/fenv.c
+++ b/src/base/fenv.c
@@ -39,7 +39,7 @@ static const int m5_round_ops[] =  {FE_DOWNWARD, FE_TONEAREST, FE_TOWARDZERO, FE
 
 void m5_fesetround(int rm)
 {
-    assert(rm > 0 && rm < 4);
+    assert(rm >= 0 && rm < 4);
     fesetround(m5_round_ops[rm]);
 }