diff --git a/ChangeLog b/ChangeLog
index 1835b5e97..6931201d4 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2004-06-14  Werner Lemberg  <wl@gnu.org>
+
+	* src/lzw/zopen.c: Comment out inclusion of signal.h and unistd.h.
+	Reported by Hyvärinen Jyrki Juhani.
+
 2004-06-11  Werner Lemberg  <wl@gnu.org>
 
 	* docs/CHANGES: Updated.
diff --git a/src/lzw/zopen.c b/src/lzw/zopen.c
index 5267f1622..2b438c25b 100644
--- a/src/lzw/zopen.c
+++ b/src/lzw/zopen.c
@@ -66,10 +66,14 @@ static char rcsid[] = "$NetBSD: zopen.c,v 1.8 2003/08/07 11:13:29 agc Exp $";
  */
 
 #include <ctype.h>
+#if 0
 #include <signal.h>
+#endif
 #include <stdlib.h>
 #include <string.h>
+#if 0
 #include <unistd.h>
+#endif
 
 #if 0
 static char_type magic_header[] =