diff --git a/healthd/healthd_mode_charger.h b/healthd/healthd_mode_charger.h
index 370ca86..6e569ee 100644
--- a/healthd/healthd_mode_charger.h
+++ b/healthd/healthd_mode_charger.h
@@ -72,7 +72,7 @@
     int64_t next_pwr_check_ = 0;
     int64_t wait_batt_level_timestamp_ = 0;
 
-    key_state keys_[KEY_MAX + 1];
+    key_state keys_[KEY_MAX + 1] = {};
 
     animation batt_anim_;
     GRSurface* surf_unknown_ = nullptr;