diff --git a/test/byte-stream-buffer.cpp b/test/byte-stream-buffer.cpp
index d606f146f6ef04ed..c911a863d27122ae 100644
--- a/test/byte-stream-buffer.cpp
+++ b/test/byte-stream-buffer.cpp
@@ -20,7 +20,7 @@ class ByteStreamBufferTest : public Test
 protected:
 	int run()
 	{
-		std::array<uint8_t, 100> data;
+		std::array<uint8_t, 100> data = {};
 		unsigned int i;
 		uint32_t value;
 		int ret;