diff --git a/Source/Plugins/BuilderModes/VisualModes/VisualMiddle3D.cs b/Source/Plugins/BuilderModes/VisualModes/VisualMiddle3D.cs
index 9a9b353d..2d1d539a 100755
--- a/Source/Plugins/BuilderModes/VisualModes/VisualMiddle3D.cs
+++ b/Source/Plugins/BuilderModes/VisualModes/VisualMiddle3D.cs
@@ -566,7 +566,7 @@ namespace CodeImp.DoomBuilder.BuilderModes
 		}
 
 		// Texture offset change
-		public override void OnChangeTextureOffset(int horizontal, int vertical, bool doSurfaceAngleCorrection)
+		public override bool OnChangeTextureOffset(int horizontal, int vertical, bool doSurfaceAngleCorrection)
 		{
 			if ((General.Map.UndoRedo.NextUndo == null) || (General.Map.UndoRedo.NextUndo.TicketID != undoticket))
 				undoticket = mode.CreateUndo("Change texture offsets");
@@ -602,6 +602,8 @@ namespace CodeImp.DoomBuilder.BuilderModes
 			//mxd. Update linked effects
 			SectorData sd = mode.GetSectorDataEx(Sector.Sector);
 			if (sd != null) sd.Reset(true);
+
+			return true;
 		}
 
 		#endregion
diff --git a/Source/Plugins/BuilderModes/VisualModes/VisualMiddleBack.cs b/Source/Plugins/BuilderModes/VisualModes/VisualMiddleBack.cs
index 0525f7f8..0f267f30 100755
--- a/Source/Plugins/BuilderModes/VisualModes/VisualMiddleBack.cs
+++ b/Source/Plugins/BuilderModes/VisualModes/VisualMiddleBack.cs
@@ -269,7 +269,7 @@ namespace CodeImp.DoomBuilder.BuilderModes
 		}
 
 		// Texture offset change
-		public override void OnChangeTextureOffset(int horizontal, int vertical, bool doSurfaceAngleCorrection)
+		public override bool OnChangeTextureOffset(int horizontal, int vertical, bool doSurfaceAngleCorrection)
 		{
 			if ((General.Map.UndoRedo.NextUndo == null) || (General.Map.UndoRedo.NextUndo.TicketID != undoticket))
 				undoticket = mode.CreateUndo("Change texture offsets");
@@ -305,6 +305,8 @@ namespace CodeImp.DoomBuilder.BuilderModes
 			//mxd. Update linked effects
 			SectorData sd = mode.GetSectorDataEx(Sector.Sector);
 			if (sd != null) sd.Reset(true);
+
+			return true;
 		}
 
 		#endregion