diff --git a/src/core/utils/slaac_address.cpp b/src/core/utils/slaac_address.cpp
index d810d1968..b3f47f612 100644
--- a/src/core/utils/slaac_address.cpp
+++ b/src/core/utils/slaac_address.cpp
@@ -338,4 +338,4 @@ exit:
 } // namespace Utils
 } // namespace ot
 
-#endif // OPENTHREAD_CONFIG_ENABLE_SLAAC
\ No newline at end of file
+#endif // OPENTHREAD_CONFIG_ENABLE_SLAAC