diff --git a/Source/Plugins/BuilderModes/ClassicModes/DragGeometryMode.cs b/Source/Plugins/BuilderModes/ClassicModes/DragGeometryMode.cs
index bbf7111b..6fe5507e 100644
--- a/Source/Plugins/BuilderModes/ClassicModes/DragGeometryMode.cs
+++ b/Source/Plugins/BuilderModes/ClassicModes/DragGeometryMode.cs
@@ -455,9 +455,6 @@ namespace CodeImp.DoomBuilder.BuilderModes
 						if (ld.Args[0] == 0)  // First argument of the action is the sector tag. 0 is not a valid value
 							continue;
 
-						if (ld.Front.Sector == null) // In case we somehow end up with a stray FOF line
-							continue;
-
 						if (ld.Front == null) // Must have a front side
 							continue;
 
diff --git a/Source/Plugins/BuilderModes/ClassicModes/EditSelectionMode.cs b/Source/Plugins/BuilderModes/ClassicModes/EditSelectionMode.cs
index 29ef22f0..7e6a3e34 100755
--- a/Source/Plugins/BuilderModes/ClassicModes/EditSelectionMode.cs
+++ b/Source/Plugins/BuilderModes/ClassicModes/EditSelectionMode.cs
@@ -1654,6 +1654,9 @@ namespace CodeImp.DoomBuilder.BuilderModes
 							if (ld.Args[0] == 0) // First argument of the action is the sector tag. 0 is not a valid value
 								continue;
 
+							if (ld.Front == null) // Must have a front side
+								continue;
+
 							Sector cs = ld.Front.Sector;
 
 							// Skip sectors that don't have a slope