diff --git a/source/rafcon/mvc/utils/constants.py b/source/rafcon/mvc/utils/constants.py
index <HASH>..<HASH> 100644
--- a/source/rafcon/mvc/utils/constants.py
+++ b/source/rafcon/mvc/utils/constants.py
@@ -28,6 +28,8 @@ CREATION_CURSOR = gtk.gdk.CROSS
 
 MAX_VALUE_LABEL_TEXT_LENGTH = 7
 
+MINIMUM_SIZE_FOR_DISPLAY = 5
+
 GRID_SIZE = 10
 BORDER_WIDTH_STATE_SIZE_FACTOR = 25.
 BORDER_WIDTH_OUTLINE_WIDTH_FACTOR = 35.
Gaphas: Do not draw elements with a side length <5px

This drastically improves the performance of big nested state machine