diff --git a/src/minimap.cpp b/src/minimap.cpp
index 8fe8b466d..b26f8c665 100644
--- a/src/minimap.cpp
+++ b/src/minimap.cpp
@@ -273,6 +273,7 @@ void Mapper::toggleMinimapShape()
 {
 	data->minimap_shape_round = !data->minimap_shape_round;
 	g_settings->setBool(("minimap_shape_round"), data->minimap_shape_round);
+	m_minimap_update_thread->deferUpdate();
 }
 
 void Mapper::setMinimapMode(MinimapMode mode)