diff --git a/ChangeLog b/ChangeLog
index b7dfc449e0..9f2ed51fcd 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -20,7 +20,8 @@ Sat Dec 25 11:02:52 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 Sat Dec 25 10:51:03 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
-	* ext/json/generator/generator.c (fbuffer_free): unused.
+	* ext/json/generator/generator.{c,h} (fbuffer_free_only_buffer):
+	  unused.
 
 	* ext/openssl/ossl_pkcs5.c (ossl_pkcs5_pbkdf2_hmac): add casts.
 
diff --git a/ext/json/generator/generator.h b/ext/json/generator/generator.h
index e47f507b0d..b31218ac2e 100644
--- a/ext/json/generator/generator.h
+++ b/ext/json/generator/generator.h
@@ -67,7 +67,6 @@ static char *fstrndup(const char *ptr, unsigned long len);
 static FBuffer *fbuffer_alloc();
 static FBuffer *fbuffer_alloc_with_length(unsigned long initial_length);
 static void fbuffer_free(FBuffer *fb);
-static void fbuffer_free_only_buffer(FBuffer *fb);
 static void fbuffer_clear(FBuffer *fb);
 static void fbuffer_append(FBuffer *fb, const char *newstr, unsigned long len);
 static void fbuffer_append_long(FBuffer *fb, long number);