diff --git a/src/mlpack/methods/linear_svm/linear_svm_function_impl.hpp b/src/mlpack/methods/linear_svm/linear_svm_function_impl.hpp
index 560faec62a..4e8a751ce3 100644
--- a/src/mlpack/methods/linear_svm/linear_svm_function_impl.hpp
+++ b/src/mlpack/methods/linear_svm/linear_svm_function_impl.hpp
@@ -285,7 +285,7 @@ void LinearSVMFunction<MatType>::Gradient(
   }
   else
   {
-    gradient.set_size(size(parameters));
+    gradient.set_size(arma::size(parameters));
     gradient.submat(0, 0, parameters.n_rows - 2, parameters.n_cols - 1) =
         dataset * difference.t();
     gradient.row(parameters.n_rows - 1) =
@@ -342,7 +342,7 @@ void LinearSVMFunction<MatType>::Gradient(
   }
   else
   {
-    gradient.set_size(size(parameters));
+    gradient.set_size(arma::size(parameters));
     gradient.submat(0, 0, parameters.n_rows - 2, parameters.n_cols - 1) =
         dataset.cols(firstId, lastId) * difference.t();
     gradient.row(parameters.n_rows - 1) =
@@ -396,7 +396,7 @@ double LinearSVMFunction<MatType>::EvaluateWithGradient(
   }
   else
   {
-    gradient.set_size(size(parameters));
+    gradient.set_size(arma::size(parameters));
     gradient.submat(0, 0, parameters.n_rows - 2, parameters.n_cols - 1) =
             dataset * difference.t();
     gradient.row(parameters.n_rows - 1) =
@@ -466,7 +466,7 @@ double LinearSVMFunction<MatType>::EvaluateWithGradient(
   }
   else
   {
-    gradient.set_size(size(parameters));
+    gradient.set_size(arma::size(parameters));
     gradient.submat(0, 0, parameters.n_rows - 2, parameters.n_cols - 1) =
         dataset.cols(firstId, lastId) * difference.t();
     gradient.row(parameters.n_rows - 1) =