diff --git a/include/grpc/grpc_security.h b/include/grpc/grpc_security.h
index 34f7eab12e3..31baa32ec9c 100644
--- a/include/grpc/grpc_security.h
+++ b/include/grpc/grpc_security.h
@@ -153,7 +153,7 @@ typedef struct {
   void *state;
 } grpc_metadata_credentials_plugin;
 
-/* Creates a credentials object
+/* Creates a credentials object from a plugin. */
 grpc_credentials *grpc_metadata_credentials_create_from_plugin(
     grpc_metadata_credentials_plugin plugin, void *reserved);