diff --git a/src/mlpack/methods/ann/layer/subview.hpp b/src/mlpack/methods/ann/layer/subview.hpp
index 3986386d7f..cbbee132c7 100644
--- a/src/mlpack/methods/ann/layer/subview.hpp
+++ b/src/mlpack/methods/ann/layer/subview.hpp
@@ -38,6 +38,7 @@ class Subview
    * Create the Subview layer object using the specified range of input to
    * accept.
    *
+   * @param inSize Width of sample.
    * @param beginRow Starting row index.
    * @param endRow Ending row index.
    * @param beginCol Starting column index.