diff --git a/kernel/module.c b/kernel/module.c
index efa1e60..c1acb0c 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -1013,6 +1013,8 @@
 		buf[l++] = 'F';
 	if (mod->taints & (1 << TAINT_CRAP))
 		buf[l++] = 'C';
+	if (mod->taints & (1 << TAINT_UNSIGNED_MODULE))
+		buf[l++] = 'X';
 	/*
 	 * TAINT_FORCED_RMMOD: could be added.
 	 * TAINT_UNSAFE_SMP, TAINT_MACHINE_CHECK, TAINT_BAD_PAGE don't
@@ -3214,7 +3216,7 @@
 		pr_notice_once("%s: module verification failed: signature "
 			       "and/or  required key missing - tainting "
 			       "kernel\n", mod->name);
-		add_taint_module(mod, TAINT_FORCED_MODULE, LOCKDEP_STILL_OK);
+		add_taint_module(mod, TAINT_UNSIGNED_MODULE, LOCKDEP_STILL_OK);
 	}
 #endif