diff --git a/src/output/output_rtmp.cpp b/src/output/output_rtmp.cpp
index 3cb81b3e..319bf191 100644
--- a/src/output/output_rtmp.cpp
+++ b/src/output/output_rtmp.cpp
@@ -131,7 +131,7 @@ namespace Mist {
       // erase &
       pos = nextpos + 1;
     }
-    if (trackSwitch){
+    if (trackSwitch && thisPacket){
       seek(thisPacket.getTime());
     }
   }