diff --git a/session.hpp b/session.hpp
index 1eec759..99bb81d 100644
--- a/session.hpp
+++ b/session.hpp
@@ -76,8 +76,8 @@
         }
 
     private:
-        uint32_t in;
-        uint32_t out;
+        uint32_t in = 0;
+        uint32_t out = 0;
 };
 /*
  * @class Session