diff --git a/tests/CommonLibs/SocketsTest.cpp b/tests/CommonLibs/SocketsTest.cpp
index c4e31d83..eb92e253 100644
--- a/tests/CommonLibs/SocketsTest.cpp
+++ b/tests/CommonLibs/SocketsTest.cpp
@@ -47,7 +47,7 @@ void *testReaderIP(void *param)
 	readSocket->nonblocking();
 	int rc = 0;
 	while (rc<gNumToSend) {
-		char buf[MAX_UDP_LENGTH];
+		char buf[MAX_UDP_LENGTH] = { 0 };
 		int count = readSocket->read(buf, MAX_UDP_LENGTH);
 		if (count>0) {
 			CERR("read: " << buf);