1 files changed, 1 insertions, 0 deletions
diff --git a/string.c b/string.c
index af744c7607..eb16998c0a 100644
--- a/string.c
+++ b/string.c
@@ -4628,6 +4628,7 @@ str_gsub(int argc, VALUE *argv, VALUE str, int bang)
 /*
  *  call-seq:
  *     str.gsub!(pattern, replacement)        -> str or nil
+ *     str.gsub!(pattern, hash)               -> str or nil
  *     str.gsub!(pattern) {|match| block }    -> str or nil
  *     str.gsub!(pattern)                     -> an_enumerator
  *