diff --git a/rmw_zenoh_cpp/src/detail/zenoh_utils.hpp b/rmw_zenoh_cpp/src/detail/zenoh_utils.hpp
index 27d05890..a52e20c7 100644
--- a/rmw_zenoh_cpp/src/detail/zenoh_utils.hpp
+++ b/rmw_zenoh_cpp/src/detail/zenoh_utils.hpp
@@ -24,12 +24,6 @@
 
 namespace rmw_zenoh_cpp
 {
-///=============================================================================
-void
-create_map_and_set_sequence_num(
-  z_owned_bytes_t * out_bytes, int64_t sequence_number,
-  uint8_t gid[RMW_GID_STORAGE_SIZE]);
-
 ///=============================================================================
 zenoh::Bytes create_map_and_set_sequence_num(
    int64_t sequence_number, uint8_t gid[RMW_GID_STORAGE_SIZE]);