diff --git a/src/gui/dialogs/outro.cpp b/src/gui/dialogs/outro.cpp
index 1c14bbf4e515..e5994000ad92 100644
--- a/src/gui/dialogs/outro.cpp
+++ b/src/gui/dialogs/outro.cpp
@@ -96,7 +96,6 @@ void outro::draw_callback(window& window)
 	canvas& window_canvas = window.get_canvas(0);
 
 	window_canvas.set_variable("fade_step", wfl::variant(fade_step_));
-	window_canvas.set_is_dirty(true);
 
 	if(fading_in_) {
 		fade_step_ ++;
diff --git a/src/gui/dialogs/story_viewer.cpp b/src/gui/dialogs/story_viewer.cpp
index 3ddcf0425d86..99bb50418452 100644
--- a/src/gui/dialogs/story_viewer.cpp
+++ b/src/gui/dialogs/story_viewer.cpp
@@ -197,9 +197,6 @@ void story_viewer::display_part(window& window)
 
 	window_canvas.set_cfg(cfg);
 
-	// Needed to make the background redraw correctly.
-	window_canvas.set_is_dirty(true);
-
 	//
 	// Title
 	//