diff --git a/ranked_tree.js b/ranked_tree.js
index e979889..df2c5f7 100644
--- a/ranked_tree.js
+++ b/ranked_tree.js
@@ -21,7 +21,7 @@ class RankedTree {
             let highlight =
                 node === highlightedNode ? ', color="blue", penwidth=3' : "";
             result.push(
-                `\t"Node(${value})" [label="${value}, ${rank}"${highlight}];`
+                `\t"Node(${value})" [label="${value}, ${rank}"${highlight}];\n`
             );
 
             [node.left, node.right]
@@ -39,7 +39,7 @@ class RankedTree {
             result.push(
                 `\t"Node(${u.value})" -> "Node(${
                     v.value
-                })" [label="${nodeDifference(v)}"]`
+                })" [label="${nodeDifference(v)}"];\n`
             );
         });
 
@@ -47,7 +47,11 @@ class RankedTree {
     }
 
     toDot(highlightedNode) {
-        return ["digraph {", ...this._getUnwrappedGraph(highlightedNode), "}"];
+        return [
+            "digraph {\n",
+            ...this._getUnwrappedGraph(highlightedNode),
+            "}\n",
+        ];
     }
 
     toString() {