diff --git a/src/didacticNet.h b/src/didacticNet.h
index 3f519b633a2e76e3681d83bebf6e623ad76e9aa7..6d4642ea8e3ee1769dbd47da74a560bf04bb0492 100644
--- a/src/didacticNet.h
+++ b/src/didacticNet.h
@@ -71,8 +71,8 @@ class didacticPSNet
 		didacticPSNet();
 		~didacticPSNet();
 
-		begin(Stream& _port);
-		begin(Stream& _port, PSNET_CALLBACK_SIGNATURE);
+		void begin(Stream& _port);
+		void begin(Stream& _port, PSNET_CALLBACK_SIGNATURE);
 		bool handleNetwork();
 		bool isDataToSend();