diff --git a/include/linux/genl_magic_func.h b/include/linux/genl_magic_func.h
index 4a4b387181ad..2984b0cb24b1 100644
--- a/include/linux/genl_magic_func.h
+++ b/include/linux/genl_magic_func.h
@@ -209,7 +209,7 @@ static int s_name ## _from_attrs_for_change(struct s_name *s,		\
  * Magic: define op number to op name mapping				{{{1
  *									{{{2
  */
-const char *CONCAT_(GENL_MAGIC_FAMILY, _genl_cmd_to_str)(__u8 cmd)
+static const char *CONCAT_(GENL_MAGIC_FAMILY, _genl_cmd_to_str)(__u8 cmd)
 {
 	switch (cmd) {
 #undef GENL_op