diff --git a/src/libCom/test/blockingSockTest.cpp b/src/libCom/test/blockingSockTest.cpp
index 4b64df1ed..b8801f4ed 100644
--- a/src/libCom/test/blockingSockTest.cpp
+++ b/src/libCom/test/blockingSockTest.cpp
@@ -1,4 +1,5 @@
 
+#include <string.h>
 #include <assert.h>
 
 #include "osiSock.h"