diff --git a/src/processor/processor_tracker.cpp b/src/processor/processor_tracker.cpp
index f8138e1fc7e1b0d152bf0576ee6fcb454e75ca0b..8937c8894b7becb5c4ebf0697355abd335663d1d 100644
--- a/src/processor/processor_tracker.cpp
+++ b/src/processor/processor_tracker.cpp
@@ -53,7 +53,7 @@ void ProcessorTracker::process(CaptureBasePtr const _incoming_ptr)
         case FIRST_TIME_WITH_PACK :
         {
             PackKeyFramePtr pack = kf_pack_buffer_.selectPack( incoming_ptr_, params_tracker_->time_tolerance);
-            kf_pack_buffer_.removeUpTo( incoming_ptr_->getTimeStamp() );
+            kf_pack_buffer_.removeUpTo( pack->key_frame->getTimeStamp() );
 
             WOLF_DEBUG( "PT ", getName(), ": KF" , pack->key_frame->id() , " callback unpacked with ts= " , pack->key_frame->getTimeStamp().get() );
 
@@ -124,7 +124,7 @@ void ProcessorTracker::process(CaptureBasePtr const _incoming_ptr)
         case RUNNING_WITH_PACK :
         {
             PackKeyFramePtr pack = kf_pack_buffer_.selectPack( last_ptr_ , params_tracker_->time_tolerance);
-            kf_pack_buffer_.removeUpTo( last_ptr_->getTimeStamp() );
+            kf_pack_buffer_.removeUpTo( pack->key_frame->getTimeStamp() );
 
             WOLF_DEBUG( "PT ", getName(), ": KF" , pack->key_frame->id() , " callback unpacked with ts= " , pack->key_frame->getTimeStamp().get() );