diff --git a/src/SparseTransform.Tests/Library/Convert/DotWriterTests.cs b/src/SparseTransform.Tests/Library/Convert/DotWriterTests.cs
index d1da1db8d75d9506d9b817545ad89902f893ee4a..ba7567816980e67e05112b8b277543566dd6d923 100644
--- a/src/SparseTransform.Tests/Library/Convert/DotWriterTests.cs
+++ b/src/SparseTransform.Tests/Library/Convert/DotWriterTests.cs
@@ -39,11 +39,11 @@ namespace SparseTransform.Tests.Library.Convert
             StringSplitOptions.None
             );
 
-            Assert.That(lines[2], Is.EqualTo("\tc_1  [shape=circle, style=filled]"));
-            Assert.That(lines[4], Is.EqualTo("\tc_3  [shape=circle, style=filled]"));
-            Assert.That(lines[5], Is.EqualTo("\tc_4  [shape=circle, style=filled]"));
-            Assert.That(lines[13], Is.EqualTo("\tc_2 -- {r_3};"));
-            Assert.That(lines[15], Is.EqualTo("\tc_4 -- {r_1};"));
+            Assert.That(lines[2], Is.EqualTo("\tr_1  [shape=circle, style=filled]"));
+            Assert.That(lines[4], Is.EqualTo("\tr_3  [shape=circle, style=filled]"));
+            Assert.That(lines[5], Is.EqualTo("\tr_4  [shape=circle, style=filled]"));
+            Assert.That(lines[13], Is.EqualTo("\tc_2 -- {r_1 r_3};"));
+            Assert.That(lines[15], Is.EqualTo("\tc_4 -- {r_3 r_5};"));
         }
 
 
@@ -54,12 +54,12 @@ namespace SparseTransform.Tests.Library.Convert
             DotWriter writer = new DotWriter();
 
             AdjacencyGraph graph = new AdjacencyGraph();
-            graph.AddEdge(1, 2);
-            graph.AddEdge(1, 5);
+            graph.AddEdge(2, 1);
             graph.AddEdge(3, 2);
-            graph.AddEdge(3, 4);
-            graph.AddEdge(4, 1);
-            graph.AddEdge(5, 4);
+            graph.AddEdge(5, 2);
+            graph.AddEdge(6, 2);
+            graph.AddEdge(4, 3);
+            graph.AddEdge(6, 4);
 
             String[] lines = writer.Write(graph).Split(
             new String[] { "\r\n", "\r", "\n" },
@@ -69,8 +69,8 @@ namespace SparseTransform.Tests.Library.Convert
             Assert.That(lines[2], Is.EqualTo("\tc_2  [shape=circle, style=filled]"));
             Assert.That(lines[4], Is.EqualTo("\tc_4  [shape=circle, style=filled]"));
             Assert.That(lines[5], Is.EqualTo("\tc_5  [shape=circle, style=filled]"));
-            Assert.That(lines[7], Is.EqualTo("\tc_3 -- {c_2};"));
-            Assert.That(lines[9], Is.EqualTo("\tc_5 -- {c_1 c_4};"));
+            Assert.That(lines[7], Is.EqualTo("\tc_2 -- {c_1};"));
+            Assert.That(lines[9], Is.EqualTo("\tc_4 -- {c_3};"));
         }