diff --git a/lib/ubsan.c b/lib/ubsan.c
index cb9af3f6b77e..3e3352f3d0da 100644
--- a/lib/ubsan.c
+++ b/lib/ubsan.c
@@ -17,7 +17,7 @@
 
 #include "ubsan.h"
 
-const char *type_check_kinds[] = {
+static const char * const type_check_kinds[] = {
 	"load of",
 	"store to",
 	"reference binding to",