diff --git a/enumerator.c b/enumerator.c
index 7284a09ac4..a366b75232 100644
--- a/enumerator.c
+++ b/enumerator.c
@@ -2414,7 +2414,7 @@ stop_result(VALUE self)
  *
  * Enumerator::ArithmeticSequence is a subclass of Enumerator,
  * that is a representation of sequences of numbers with common difference.
- * The instances of this class can be generated by Range#step and Numeric#step
+ * Instances of this class can be generated by the Range#step and Numeric#step
  * methods.
  */