Index: binaries/data/mods/public/globalscripts/Templates.js
===================================================================
--- binaries/data/mods/public/globalscripts/Templates.js
+++ binaries/data/mods/public/globalscripts/Templates.js
@@ -459,12 +459,23 @@
 	}
 
 	if (template.WallPiece)
+	{
+		let length = +template.WallPiece.Length;
+
+		if (ret.obstruction && ret.obstruction.shape.type == "static")
+		{
+			let obstruction = Math.max(ret.obstruction.shape.depth, ret.obstruction.shape.width);
+			if (length < obstruction)
+				warn("Template with parent " + template["@parent"] + " has a wall piece length (" + length + ") shorter than obstruction (" + obstruction + ")");
+		}
+
 		ret.wallPiece = {
-			"length": +template.WallPiece.Length,
+			"length": length,
 			"angle": +(template.WallPiece.Orientation || 1) * Math.PI,
 			"indent": +(template.WallPiece.Indent || 0),
 			"bend": +(template.WallPiece.Bend || 0) * Math.PI
 		};
+	}
 
 	return ret;
 }
Index: source/tools/entity/checkrefs.pl
===================================================================
--- source/tools/entity/checkrefs.pl
+++ source/tools/entity/checkrefs.pl
@@ -105,6 +105,17 @@
             {
                 push @deps, [ $path, "art/textures/ui/session/portraits/" . $ent->{Entity}{Identity}{Icon}{' content'} ] if $ent->{Entity}{Identity}{Icon};
             }
+            if ($ent->{Entity}{Obstruction}{Static} and $ent->{Entity}{WallPiece})
+            {
+                my $obstructionDepth = $ent->{Entity}{Obstruction}{Static}{'@depth'}{' content'};
+                my $obstructionWidth = $ent->{Entity}{Obstruction}{Static}{'@width'}{' content'};
+                my $obstruction = ($obstructionDepth, $obstructionWidth)[$obstructionDepth < $obstructionWidth];
+                my $wallPiece = $ent->{Entity}{WallPiece}{Length}{' content'};
+                if ($wallPiece < $obstruction)
+                {
+                    warn $f . " WallPiece length (" . $wallPiece . ") is shorter than Obstruction size (" . $obstruction . ")";
+                }
+            }
         }
     }
 }