diff --git a/rmw_cyclonedds_cpp/src/TypeSupport2.hpp b/rmw_cyclonedds_cpp/src/TypeSupport2.hpp
index 0beadc1..55fceb7 100644
--- a/rmw_cyclonedds_cpp/src/TypeSupport2.hpp
+++ b/rmw_cyclonedds_cpp/src/TypeSupport2.hpp
@@ -245,6 +245,8 @@ public:
   }
   const void * sequence_contents(const void * ptr_to_sequence) const override
   {
+    if(sequence_size(ptr_to_sequence) == 0)
+      return nullptr;
     return m_get_const_function(ptr_to_sequence, 0);
   }
 };