diff --git a/iceoryx_posh/include/iceoryx_posh/internal/roudi/introspection/port_introspection.hpp b/iceoryx_posh/include/iceoryx_posh/internal/roudi/introspection/port_introspection.hpp
index f9624ca380a..b169be32242 100644
--- a/iceoryx_posh/include/iceoryx_posh/internal/roudi/introspection/port_introspection.hpp
+++ b/iceoryx_posh/include/iceoryx_posh/internal/roudi/introspection/port_introspection.hpp
@@ -85,8 +85,8 @@ class PortIntrospection
 
             using TimePointNs_t = mepoo::TimePointNs_t;
             using DurationNs_t = mepoo::DurationNs_t;
-            TimePointNs_t m_sequenceNumberTimestamp {DurationNs_t(0)};
-            mepoo::SequenceNumber_t m_sequenceNumber{0};
+            TimePointNs_t m_sequenceNumberTimestamp {DurationNs_t(0U)};
+            mepoo::SequenceNumber_t m_sequenceNumber{0U};
 
             // map from indices to object pointers
             std::map<int, ConnectionInfo*> connectionMap;