1 files changed, 4 insertions, 1 deletions
diff --git a/complex.c b/complex.c
index 25afdc0c00..112135c7dd 100644
--- a/complex.c
+++ b/complex.c
@@ -232,7 +232,10 @@ f_negative_p(VALUE x)
 inline static int
 f_zero_p(VALUE x)
 {
-    if (RB_INTEGER_TYPE_P(x)) {
+    if (RB_FLOAT_TYPE_P(x)) {
+        return FLOAT_ZERO_P(x);
+    }
+    else if (RB_INTEGER_TYPE_P(x)) {
         return FIXNUM_ZERO_P(x);
     }
     else if (RB_TYPE_P(x, T_RATIONAL)) {