diff --git a/src/frontend/terminaloverlay.cc b/src/frontend/terminaloverlay.cc
index f5cb29c..baf9e88 100644
--- a/src/frontend/terminaloverlay.cc
+++ b/src/frontend/terminaloverlay.cc
@@ -759,7 +759,7 @@ void PredictionEngine::new_user_byte( char the_byte, const Framebuffer &fb )
 	}
 
 	/* do the insert */
-	int rightmost_column = predict_overwrite ? cursor().col + 1 : fb.ds.get_width() - 1;
+	int rightmost_column = predict_overwrite ? cursor().col : fb.ds.get_width() - 1;
 	for ( int i = rightmost_column; i > cursor().col; i-- ) {
 	  ConditionalOverlayCell &cell = the_row.overlay_cells[ i ];
 	  cell.reset_with_orig();