diff --git a/src/frontend/terminaloverlay.cc b/src/frontend/terminaloverlay.cc
index 1f83924..06cce3b 100644
--- a/src/frontend/terminaloverlay.cc
+++ b/src/frontend/terminaloverlay.cc
@@ -388,6 +388,13 @@ void PredictionEngine::cull( const Framebuffer &fb )
     return;
   }
 
+  if ( (last_height != fb.ds.get_height())
+       || (last_width != fb.ds.get_width()) ) {
+    last_height = fb.ds.get_height();
+    last_width = fb.ds.get_width();
+    reset();
+  }
+
   uint64_t now = timestamp();
 
   /* control srtt_trigger with hysteresis */
diff --git a/src/frontend/terminaloverlay.h b/src/frontend/terminaloverlay.h
index a0880a6..d4bde26 100644
--- a/src/frontend/terminaloverlay.h
+++ b/src/frontend/terminaloverlay.h
@@ -191,6 +191,8 @@ namespace Overlay {
 
     unsigned int send_interval;
 
+    int last_height, last_width;
+
   public:
     enum DisplayPreference {
       Always,
@@ -227,6 +229,7 @@ namespace Overlay {
 			       glitch_trigger( 0 ),
 			       last_quick_confirmation( 0 ),
 			       send_interval( 250 ),
+			       last_height( 0 ), last_width( 0 ),
 			       display_preference( Adaptive )
     {
     }