diff --git a/gtsam/discrete/tests/testDiscreteBayesTree.cpp b/gtsam/discrete/tests/testDiscreteBayesTree.cpp
index 26356be3d..6635633a2 100644
--- a/gtsam/discrete/tests/testDiscreteBayesTree.cpp
+++ b/gtsam/discrete/tests/testDiscreteBayesTree.cpp
@@ -243,27 +243,27 @@ TEST(DiscreteBayesTree, Dot) {
   string actual = self.bayesTree->dot();
   EXPECT(actual ==
          "digraph G{\n"
-         "0[label=\"13,11,6,7\"];\n"
+         "0[label=\"13, 11, 6, 7\"];\n"
          "0->1\n"
-         "1[label=\"14 : 11,13\"];\n"
+         "1[label=\"14 : 11, 13\"];\n"
          "1->2\n"
-         "2[label=\"9,12 : 14\"];\n"
+         "2[label=\"9, 12 : 14\"];\n"
          "2->3\n"
-         "3[label=\"3 : 9,12\"];\n"
+         "3[label=\"3 : 9, 12\"];\n"
          "2->4\n"
-         "4[label=\"2 : 9,12\"];\n"
+         "4[label=\"2 : 9, 12\"];\n"
          "2->5\n"
-         "5[label=\"8 : 12,14\"];\n"
+         "5[label=\"8 : 12, 14\"];\n"
          "5->6\n"
-         "6[label=\"1 : 8,12\"];\n"
+         "6[label=\"1 : 8, 12\"];\n"
          "5->7\n"
-         "7[label=\"0 : 8,12\"];\n"
+         "7[label=\"0 : 8, 12\"];\n"
          "1->8\n"
-         "8[label=\"10 : 13,14\"];\n"
+         "8[label=\"10 : 13, 14\"];\n"
          "8->9\n"
-         "9[label=\"5 : 10,13\"];\n"
+         "9[label=\"5 : 10, 13\"];\n"
          "8->10\n"
-         "10[label=\"4 : 10,13\"];\n"
+         "10[label=\"4 : 10, 13\"];\n"
          "}");
 }