diff --git a/include/boost/geometry/iterators/segment_range_iterator.hpp b/include/boost/geometry/iterators/segment_range_iterator.hpp
index dd3ed7c37..8cdd3fd88 100644
--- a/include/boost/geometry/iterators/segment_range_iterator.hpp
+++ b/include/boost/geometry/iterators/segment_range_iterator.hpp
@@ -8,6 +8,8 @@
 #ifndef BOOST_GEOMETRY_SEGMENT_RANGE_ITERATOR_HPP
 #define BOOST_GEOMETRY_SEGMENT_RANGE_ITERATOR_HPP
 
+#include <boost/assert.hpp>
+
 #include <boost/iterator.hpp>
 #include <boost/iterator/iterator_facade.hpp>
 #include <boost/iterator/iterator_categories.hpp>
@@ -79,8 +81,8 @@ private:
         {
             return m_points[m_index];
         }
-        // Should not occur. Probably throw here.
-        // TODO decide
+
+        BOOST_ASSERT(!"Should not occur"); // Probably throw here.
         return m_points[0];
     }