diff --git a/enumerator.c b/enumerator.c
index c563fa41bb..a4ad915464 100644
--- a/enumerator.c
+++ b/enumerator.c
@@ -198,7 +198,7 @@ enumerator_ptr(VALUE obj)
  *          must not exceed the number expected by +method+
  *
  *  If a block is given, it will be used to calculate the size of
- *  the enumerator (see Enumerator#size=).
+ *  the enumerator (see Enumerator#size).
  *
  * === Example
  *