1 files changed, 1 insertions, 1 deletions
diff --git a/rational.c b/rational.c
index 8fae9c72e0..313dd0892e 100644
--- a/rational.c
+++ b/rational.c
@@ -128,7 +128,7 @@ f_abs(VALUE x)
 }
 
 
-inline static VALUE
+inline static int
 f_integer_p(VALUE x)
 {
     return RB_INTEGER_TYPE_P(x);