diff --git a/include/chat/misc.h b/include/chat/misc.h
index eb5ceae..bb47e27 100644
--- a/include/chat/misc.h
+++ b/include/chat/misc.h
@@ -28,7 +28,7 @@ void why2_clean_threads(void); //CLOSE EVERY RUNNING THREAD
 typedef struct why2_connection
 {
     int connection;
-    int thread; //pthread_t
+    unsigned long thread; //pthread_t
 } why2_connection_t;
 
 #endif
\ No newline at end of file