diff --git a/src/mlpack/tests/lmnn_test.cpp b/src/mlpack/tests/lmnn_test.cpp
index 43e772691b..fb0e7f2fc5 100644
--- a/src/mlpack/tests/lmnn_test.cpp
+++ b/src/mlpack/tests/lmnn_test.cpp
@@ -357,7 +357,10 @@ BOOST_AUTO_TEST_CASE(LMNNSGDSimpleDatasetTest)
   LMNN<> lmnn(dataset, labels, 1);
 
   arma::mat outputMatrix;
-  lmnn.LearnDistance(outputMatrix);
+  std::stringstream stream;
+
+  lmnn.LearnDistance(outputMatrix, ens::ProgressBar(70, stream));
+  BOOST_REQUIRE_GT(stream.str().length(), 0);
 
   // Ensure that the objective function is better now.
   LMNNFunction<> lmnnfn(dataset, labels, 1, 0.6, 1);