diff --git a/arch/um/drivers/port_user.c b/arch/um/drivers/port_user.c
index 9a8e1b64c22e3dcf4a51845b4a9343adfbc1e144..5f56d11b886fc2926ac412b0f3b292a1a88b2ec3 100644
--- a/arch/um/drivers/port_user.c
+++ b/arch/um/drivers/port_user.c
@@ -168,7 +168,7 @@ int port_connection(int fd, int *socket, int *pid_out)
 {
 	int new, err;
 	char *argv[] = { "/usr/sbin/in.telnetd", "-L",
-			 "/usr/lib/uml/port-helper", NULL };
+			 OS_LIB_PATH "/uml/port-helper", NULL };
 	struct port_pre_exec_data data;
 
 	new = accept(fd, NULL, 0);