diff --git a/Source/Plugins/BuilderModes/ClassicModes/SectorsMode.cs b/Source/Plugins/BuilderModes/ClassicModes/SectorsMode.cs
index 696a580..0fac0f2 100644
--- a/Source/Plugins/BuilderModes/ClassicModes/SectorsMode.cs
+++ b/Source/Plugins/BuilderModes/ClassicModes/SectorsMode.cs
@@ -1106,6 +1106,8 @@ namespace CodeImp.DoomBuilder.BuilderModes
 
 						General.Map.Renderer2D.UpdateExtraFloorFlag(); //mxd
 
+						UpdateEffectLabels();
+
 						UpdateOverlaySurfaces(); //mxd
 						General.Interface.RedrawDisplay();
 					}