1 files changed, 1 insertions, 0 deletions

diff --git a/user.cxx b/user.cxx
index c9984cb..ee2d2d0 100644
--- a/user.cxx
+++ b/user.cxx
@@ -1,3 +1,4 @@
+#include <cstddef>
 #include <rtclient/client.h>
 #include "qrtclient/user.hxx"