diff --git a/appl/kx/kx.h b/appl/kx/kx.h
index 867bb5f16..684e8e532 100644
--- a/appl/kx/kx.h
+++ b/appl/kx/kx.h
@@ -68,8 +68,6 @@ extern char *prog;
 int copy_encrypted (int fd1, int fd2, des_cblock *iv,
 		    des_key_schedule schedule);
 
-RETSIGTYPE childhandler (int);
-
 extern char x_socket[];
 
 int get_xsockets (int *unix_socket, int *tcp_socket);