diff --git a/cmd/sf.c b/cmd/sf.c
index eac27ed2d77..15361a4bddf 100644
--- a/cmd/sf.c
+++ b/cmd/sf.c
@@ -394,7 +394,7 @@ enum {
 	STAGE_COUNT,
 };
 
-static char *stage_name[STAGE_COUNT] = {
+static const char *stage_name[STAGE_COUNT] = {
 	"erase",
 	"check",
 	"write",