diff --git a/main.cpp b/main.cpp
index 1deaf67..4515d67 100644
--- a/main.cpp
+++ b/main.cpp
@@ -3,7 +3,7 @@ Copyright 2016-2017 Daniil Gentili
 (https://daniil.it)
 This file is part of php-libtgvoip.
 php-libtgvoip is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the free Software Foundation, either version 3 of the License, or (at your option) any later version.
-The PWRTelegram API is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+php-libtgvoip is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 See the GNU Affero General Public License for more details.
 You should have received a copy of the GNU General Public License along with php-libtgvoip.
 If not, see <http://www.gnu.org/licenses/>.
diff --git a/main.h b/main.h
index 710351c..ac39961 100644
--- a/main.h
+++ b/main.h
@@ -147,13 +147,13 @@ private:
     std::queue<FILE *> holdFiles;
     Mutex inputMutex;
 
-    FILE *outputFile;
+    FILE *outputFile = NULL;
     Mutex outputMutex;
 
     size_t readInput;
     size_t readOutput;
     int callState = CALL_STATE_NONE;
-    VoIPController *inst;
+    VoIPController *inst = NULL;
 };
 
 #endif