diff --git a/include/ChangeLog b/include/ChangeLog
index 36421318d..1c96081cc 100644
--- a/include/ChangeLog
+++ b/include/ChangeLog
@@ -1,3 +1,7 @@
+2000-01-27  Nick Clifton  <nickc@redhat.com>
+
+	* dis-asm.h: Add prototype for disassembler_usage().
+
 1999-12-15  Doug Evans  <dje@transmeta.com>
 
 	* dis-asm.h: Enclose in extern "C" ifdef __cplusplus.
diff --git a/include/dis-asm.h b/include/dis-asm.h
index 121b39830..b9383fa71 100644
--- a/include/dis-asm.h
+++ b/include/dis-asm.h
@@ -194,6 +194,9 @@ extern int arm_toggle_regnames          PARAMS ((void));
 /* Fetch the disassembler for a given BFD, if that support is available.  */
 extern disassembler_ftype disassembler	PARAMS ((bfd *));
 
+/* Document any target specific options available from the disassembler.  */
+extern void disassembler_usage          PARAMS ((FILE *));
+
 
 /* This block of definitions is for particular callers who read instructions
    into a buffer before calling the instruction decoder.  */