1 files changed, 1 insertions, 1 deletions
diff --git a/string.c b/string.c
index b1ada5ca2b..6e210a2075 100644
--- a/string.c
+++ b/string.c
@@ -4690,7 +4690,7 @@ rb_str_capitalize(VALUE str)
 
 /*
  *  call-seq:
-*     str.swapcase!   -> str or nil
+ *     str.swapcase!   -> str or nil
  *
  *  Equivalent to <code>String#swapcase</code>, but modifies the receiver in
  *  place, returning <i>str</i>, or <code>nil</code> if no changes were made.