diff --git a/src/io/pibasetransfer.cpp b/src/io/pibasetransfer.cpp
index db342d1c..8e2c846f 100644
--- a/src/io/pibasetransfer.cpp
+++ b/src/io/pibasetransfer.cpp
@@ -152,7 +152,7 @@ bool PIBaseTransfer::send_process() {
 	state_string = "sending";
 	PITimeMeasurer stm;
 	send_tm.reset();
-	int ltm = 0;
+	//int ltm = 0;
 	for (int i = 0; i < session.size_s(); i++) {
 		if (send_queue >= packets_count) {
 			--i;
diff --git a/src/thread/pitimer.cpp b/src/thread/pitimer.cpp
index 6a640d49..f0731358 100755
--- a/src/thread/pitimer.cpp
+++ b/src/thread/pitimer.cpp
@@ -309,8 +309,10 @@ _PITimerImp_Pool::Pool * _PITimerImp_Pool::Pool::instance() {
 void _PITimerImp_Pool::Pool::add(_PITimerImp_Pool * t) {
 	//piCout << "add ...";
 	lock();
-	if (!timers.contains(t))
+	if (!timers.contains(t)) {
 		timers << t;
+		to_remove.removeOne(t);
+	}
 	unlock();
 	//piCout << "add done";
 }
@@ -319,7 +321,7 @@ void _PITimerImp_Pool::Pool::add(_PITimerImp_Pool * t) {
 void _PITimerImp_Pool::Pool::remove(_PITimerImp_Pool * t) {
 	//piCout << "remove ...";
 	lock();
-	timers.removeOne(t);
+	to_remove.removeOne(t);
 	unlock();
 	//piCout << "remove done";
 }
@@ -328,6 +330,9 @@ void _PITimerImp_Pool::Pool::remove(_PITimerImp_Pool * t) {
 void _PITimerImp_Pool::Pool::run() {
 	piForeach (_PITimerImp_Pool * t, timers)
 		t->threadFunc();
+	piForeach (_PITimerImp_Pool * t, to_remove)
+		timers.removeOne(t);
+	to_remove.clear();
 		//while (t->threadFunc());
 }
 
diff --git a/src/thread/pitimer.h b/src/thread/pitimer.h
index a0a07dcb..78bf68a1 100755
--- a/src/thread/pitimer.h
+++ b/src/thread/pitimer.h
@@ -120,7 +120,7 @@ private:
 		void add(_PITimerImp_Pool * t);
 		void remove(_PITimerImp_Pool * t);
 		void run();
-		PIVector<_PITimerImp_Pool * > timers;
+		PIVector<_PITimerImp_Pool * > timers, to_remove;
 	};
 	virtual bool startTimer(double interval_ms);
 	virtual bool stopTimer();