diff --git a/ChangeLog b/ChangeLog
index 6bab5c4ed4..a6d7447307 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Mon Feb 25 10:41:41 2008  Martin Duerst  <duerst@it.aoyama.ac.jp>
+
+	* encoding.c (Encoding#dummy): minor grammatical fixes
+	  in rdoc documentation.
+
 Mon Feb 25 00:01:03 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* cygwin/GNUmakefile.in (clean-local): should be double-colon.
diff --git a/encoding.c b/encoding.c
index 813b4b5062..19343ea7c9 100644
--- a/encoding.c
+++ b/encoding.c
@@ -357,10 +357,10 @@ rb_enc_dummy_p(rb_encoding *enc)
  * call-seq:
  *   enc.dummy? => true or false
  *
- * Returns true for dummy encoding.
- * A dummy encoding is a encoding which character handling is not properly
+ * Returns true for dummy encodings.
+ * A dummy encoding is an encoding for which character handling is not properly
  * implemented.
- * It is used for stateful encoding.
+ * It is used for stateful encodings.
  *
  *   Encoding::ISO_2022_JP.dummy?       #=> true
  *   Encoding::UTF_8.dummy?             #=> false