diff --git a/src/ChangeLog b/src/ChangeLog
index fa23e338bb1..209761574f8 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,7 @@
+2002-02-23  Eli Zaretskii  <eliz@is.elta.co.il>
+
+	* coding.h (run_pre_post_conversion_on_str): Add prototype.
+
 2002-02-23  Jason Rumney  <jasonr@gnu.org>
 
 	* w32select.c (Fw32_set_clipboard_data): Run pre-write-conversion
diff --git a/src/coding.h b/src/coding.h
index 69b5c69afbb..500f02acf32 100644
--- a/src/coding.h
+++ b/src/coding.h
@@ -626,6 +626,9 @@ extern void coding_restore_composition P_ ((struct coding_system *,
 					    Lisp_Object));
 extern int code_convert_region P_ ((int, int, int, int, struct coding_system *,
 				    int, int));
+extern Lisp_Object run_pre_post_conversion_on_str P_ ((Lisp_Object,
+						       struct coding_system *,
+						       int));
 extern int decoding_buffer_size P_ ((struct coding_system *, int));
 extern int encoding_buffer_size P_ ((struct coding_system *, int));
 extern void detect_coding P_ ((struct coding_system *, unsigned char *, int));