--- a/sources/common/include/platform/linux/linuxplatform.h
+++ b/sources/common/include/platform/linux/linuxplatform.h
@@ -59,6 +59,7 @@
 #include <sys/socket.h>
 #include <string.h>
 #include <stdarg.h>
+#include <unistd.h>
 using namespace std;