diff --git a/src/include/containers/BlockingQueue.hpp b/src/include/containers/BlockingQueue.hpp
index 7e0ac7f89e..931cfd0950 100644
--- a/src/include/containers/BlockingQueue.hpp
+++ b/src/include/containers/BlockingQueue.hpp
@@ -81,7 +81,7 @@ private:
 	px4_sem_t	_sem_head;
 	px4_sem_t	_sem_tail;
 
-	T _data[N];
+	T _data[N] {};
 
 	size_t _head{0};
 	size_t _tail{0};