diff --git a/src/components/ble/NotificationManager.h b/src/components/ble/NotificationManager.h
index 09b5a561..f68a68af 100644
--- a/src/components/ble/NotificationManager.h
+++ b/src/components/ble/NotificationManager.h
@@ -30,7 +30,7 @@ namespace Pinetime {
         Id id = 0;
         bool valid = false;
         uint8_t size;
-        std::array<char, MessageSize + 1> message;
+        std::array<char, MessageSize + 1> message {};
         Categories category = Categories::Unknown;
 
         const char* Message() const;