diff --git a/gtsam/discrete/discrete.i b/gtsam/discrete/discrete.i
index cf3f98fe6..74de7a922 100644
--- a/gtsam/discrete/discrete.i
+++ b/gtsam/discrete/discrete.i
@@ -23,9 +23,9 @@ class DiscreteKeys {
 std::vector<gtsam::DiscreteValues> cartesianProduct(
     const gtsam::DiscreteKeys& keys);
 
-// void PrintDiscreteValues(
-//     const gtsam::DiscreteValues& values, const std::string& s = "",
-//     const gtsam::KeyFormatter& keyFormatter = gtsam::DefaultKeyFormatter);
+void PrintDiscreteValues(
+    const gtsam::DiscreteValues& values, const std::string& s = "",
+    const gtsam::KeyFormatter& keyFormatter = gtsam::DefaultKeyFormatter);
 
 string markdown(
     const gtsam::DiscreteValues& values,