diff --git a/include/linux/module.h b/include/linux/module.h
index 4c1b02e..6ba0e87 100644
--- a/include/linux/module.h
+++ b/include/linux/module.h
@@ -240,6 +240,7 @@
 	unsigned int num_syms;
 
 	/* Kernel parameters. */
+	struct mutex param_lock;
 	struct kernel_param *kp;
 	unsigned int num_kp;