diff --git a/file.c b/file.c
index d5a50b2de5..f105a77d76 100644
--- a/file.c
+++ b/file.c
@@ -1871,7 +1871,7 @@ rb_file_mtime(VALUE obj)
  *  directory information about the file was changed, not the file
  *  itself).
  *
- *  Note that onn Windows (NTFS), returns creation time (birth time).
+ *  Note that on Windows (NTFS), returns creation time (birth time).
  *
  *     File.ctime("testfile")   #=> Wed Apr 09 08:53:13 CDT 2003
  *
@@ -1896,7 +1896,7 @@ rb_file_s_ctime(VALUE klass, VALUE fname)
  *  Returns the change time for <i>file</i> (that is, the time directory
  *  information about the file was changed, not the file itself).
  *
- *  Note that onn Windows (NTFS), returns creation time (birth time).
+ *  Note that on Windows (NTFS), returns creation time (birth time).
  *
  *     File.new("testfile").ctime   #=> Wed Apr 09 08:53:14 CDT 2003
  *