diff --git a/src/mlpack/core/util/io.cpp b/src/mlpack/core/util/io.cpp
index 2c9efefb3a..9dd571e369 100644
--- a/src/mlpack/core/util/io.cpp
+++ b/src/mlpack/core/util/io.cpp
@@ -289,7 +289,7 @@ void IO::CheckInputMatrices()
     {
       IO::CheckInputMatrix(IO::GetParam<arma::rowvec>(paramName), paramName);
     }
-    else if (paramType == "TUPLE_TYPE")
+    else if (paramType == "std::tuple<data::DatasetInfo, arma::mat>")
     {
       IO::CheckInputMatrix(
         std::get<1>(IO::GetParam<TupleType>(paramName)), paramName);
diff --git a/src/mlpack/core/util/param.hpp b/src/mlpack/core/util/param.hpp
index c820df4b65..73f462e464 100644
--- a/src/mlpack/core/util/param.hpp
+++ b/src/mlpack/core/util/param.hpp
@@ -1014,8 +1014,8 @@ using DatasetInfo = DatasetMapper<IncrementPolicy, std::string>;
  * https://github.com/mlpack/mlpack/issues/100 for more information.
  */
 #define PARAM_MATRIX_AND_INFO_IN(ID, DESC, ALIAS) \
-    PARAM_IN(std::tuple<mlpack::data::DatasetInfo, arma::mat>, ID, DESC, \
-        ALIAS, std::tuple<mlpack::data::DatasetInfo, arma::mat>(), false)
+    PARAM_IN(std::tuple<mlpack::data::DatasetInfo, arma::mat>, ID, DESC, ALIAS, \
+        std::tuple<mlpack::data::DatasetInfo, arma::mat>(), false)
 
 /**
  * Define an input model.  From the command line, the user can specify the file