diff --git a/src/list.cpp b/src/list.cpp
index aee57506..47036c70 100644
--- a/src/list.cpp
+++ b/src/list.cpp
@@ -45,8 +45,8 @@ void List::verify_valid_row(size_t row_ndx, bool insertion) const
 {
     size_t size = m_link_view->size();
     if (row_ndx > size || (!insertion && row_ndx == size)) {
-        throw std::out_of_range("Index " + std::to_string(row_ndx) + " is outside of range 0..." +
-                                std::to_string(size) + ".");
+        throw std::out_of_range("Index " + to_string(row_ndx) + " is outside of range 0..." +
+                                to_string(size) + ".");
     }
 }