diff --git a/usr.sbin/powerd/powerd.c b/usr.sbin/powerd/powerd.c
index a1a5126223ae..8db875bdc9a6 100644
--- a/usr.sbin/powerd/powerd.c
+++ b/usr.sbin/powerd/powerd.c
@@ -71,7 +71,7 @@ typedef enum {
 	SRC_UNKNOWN,
 } power_src_t;
 
-const char *modes[] = {
+static const char *modes[] = {
 	"AC",
 	"battery",
 	"unknown"