diff --git a/src/platform/OpenThread/GenericThreadStackManagerImpl_OpenThread.cpp b/src/platform/OpenThread/GenericThreadStackManagerImpl_OpenThread.cpp
index 831ea9de87b3d1..ac309d1aa2f1de 100644
--- a/src/platform/OpenThread/GenericThreadStackManagerImpl_OpenThread.cpp
+++ b/src/platform/OpenThread/GenericThreadStackManagerImpl_OpenThread.cpp
@@ -863,7 +863,7 @@ CHIP_ERROR GenericThreadStackManagerImpl_OpenThread<ImplClass>::_WriteThreadNetw
             }
         }
 
-        err = encoder.Encode(static_cast<uint8_t>(routingRole));
+        err = encoder.Encode(routingRole);
     }
     break;