diff --git a/src/cpp/rtps/writer/StatefulWriter.cpp b/src/cpp/rtps/writer/StatefulWriter.cpp
index d036152f024..1136b2473d6 100644
--- a/src/cpp/rtps/writer/StatefulWriter.cpp
+++ b/src/cpp/rtps/writer/StatefulWriter.cpp
@@ -182,7 +182,7 @@ StatefulWriter::StatefulWriter(
     , may_remove_change_(0)
     , disable_heartbeat_piggyback_(att.disable_heartbeat_piggyback)
     , disable_positive_acks_(att.disable_positive_acks)
-    , keep_duration_(att.keep_duration.to_ns() * 1e-3)
+    , keep_duration_(att.keep_duration)
     , last_sequence_number_()
     , biggest_removed_sequence_number_()
     , sendBufferSize_(pimpl->get_min_network_send_buffer_size())
@@ -217,7 +217,7 @@ StatefulWriter::StatefulWriter(
     , may_remove_change_(0)
     , disable_heartbeat_piggyback_(att.disable_heartbeat_piggyback)
     , disable_positive_acks_(att.disable_positive_acks)
-    , keep_duration_(att.keep_duration.to_ns() * 1e-3)
+    , keep_duration_(att.keep_duration)
     , last_sequence_number_()
     , biggest_removed_sequence_number_()
     , sendBufferSize_(pimpl->get_min_network_send_buffer_size())