diff --git a/src/zm_monitor.cpp b/src/zm_monitor.cpp
index 8b8aa0403..18d3d0db8 100644
--- a/src/zm_monitor.cpp
+++ b/src/zm_monitor.cpp
@@ -1241,6 +1241,7 @@ bool Monitor::Analyse()
 
     if ( static_undef )
     {
+        static_undef = false;
         timestamps = new struct timeval *[pre_event_count];
         images = new Image *[pre_event_count];
         last_signal = shared_data->signal;
@@ -1625,13 +1626,6 @@ bool Monitor::Analyse()
         last_signal = signal;
     }
 
-    if ( static_undef )
-    {
-        delete[] timestamps;
-        delete[] images;
-        static_undef = false;
-    }
-
     shared_data->last_read_index = index%image_buffer_count;
     //shared_data->last_read_time = image_buffer[index].timestamp->tv_sec;
     shared_data->last_read_time = now.tv_sec;