1 files changed, 0 insertions, 1 deletions
diff --git a/math.c b/math.c
index 51caf35c5d..630aa13baa 100644
--- a/math.c
+++ b/math.c
@@ -298,7 +298,6 @@ math_atanh(VALUE obj, VALUE x)
     d0 = RFLOAT_VALUE(x);
     d = atanh(d0);
     domain_check(d0, d, "atanh");
-    infinity_check(x, d, "atanh");
     return DBL2NUM(d);
 }