1 files changed, 1 insertions, 1 deletions
diff --git a/bignum.c b/bignum.c
index ae748fc86a..948e162345 100644
--- a/bignum.c
+++ b/bignum.c
@@ -979,8 +979,8 @@ rb_big_eq(x, y)
 	    volatile double a, b;
 
 	    a = RFLOAT(y)->value;
+	    if (isnan(a)) return Qfalse;
 	    b = rb_big2dbl(x);
-	    if (isnan(a) || isnan(b)) return Qfalse;
 	    return (a == b)?Qtrue:Qfalse;
 	}
       default: