diff --git a/doc/supplements/c4x/ChangeLog b/doc/supplements/c4x/ChangeLog
index ce9d041f64..a586edcfbe 100644
--- a/doc/supplements/c4x/ChangeLog
+++ b/doc/supplements/c4x/ChangeLog
@@ -1,3 +1,7 @@
+2003-01-25	Ralf Corsepius <corsepiu@faw.uni-ulm.de>
+
+	* c4x.texi: Set @setfilename c4x.info.
+
 2003-01-25	Ralf Corsepius <corsepiu@faw.uni-ulm.de>
 
 	* Makefile.am: New.
diff --git a/doc/supplements/c4x/c4x.texi b/doc/supplements/c4x/c4x.texi
index 306197fe83..594f95df87 100644
--- a/doc/supplements/c4x/c4x.texi
+++ b/doc/supplements/c4x/c4x.texi
@@ -1,6 +1,6 @@
 \input texinfo   @c -*-texinfo-*-
 @c %**start of header
-@setfilename c4x
+@setfilename c4x.info
 @setcontentsaftertitlepage
 @syncodeindex vr fn
 @synindex ky cp