diff --git a/m-worker.h b/m-worker.h
index ba29f1bb..bb11c423 100644
--- a/m-worker.h
+++ b/m-worker.h
@@ -455,16 +455,16 @@ m_worker_count(m_worker_t g)
   TODO: Support oplist for input & outputs parameters 
 */
 #if M_USE_WORKER_CLANG_BLOCK
-#define M_WORKER_SPAWN(_block, _input, _core, _output)                          \
+#define M_WORKER_SPAWN(_block, _input, _core, _output)                        \
   M_WORK3R_DEF_DATA(_input, _output)                                          \
   M_WORK3R_DEF_SUBBLOCK(_input, _output, _core)                               \
   m_work3r_spawn_block ((_block), M_WORK3R_SPAWN_SUBFUNC_NAME,  &M_WORK3R_SPAWN_DATA_NAME)
 #elif M_USE_WORKER_CPP_FUNCTION
 // TODO: Explicit pass all arguments by reference.
-#define M_WORKER_SPAWN(_block, _input, _core, _output)                          \
+#define M_WORKER_SPAWN(_block, _input, _core, _output)                        \
   m_work3r_spawn_function ((_block), [&](void *param) {(void)param ; _core } ,  NULL)
 #else
-#define M_WORKER_SPAWN(_block, _input, _core, _output)                          \
+#define M_WORKER_SPAWN(_block, _input, _core, _output)                        \
   M_WORK3R_DEF_DATA(_input, _output)                                          \
   M_WORK3R_DEF_SUBFUNC(_input, _output, _core)                                \
   m_worker_spawn ((_block), M_WORK3R_SPAWN_SUBFUNC_NAME,  &M_WORK3R_SPAWN_DATA_NAME)