diff --git a/kernel/atom.h b/kernel/atom.h
index b725c66..55d469e 100755
--- a/kernel/atom.h
+++ b/kernel/atom.h
@@ -67,7 +67,7 @@ typedef struct atom_tcb
 #endif
 
 #ifdef ATOM_TLS
-	ATOM_TLS
+	ATOM_TLS                    /* Thread Local Storage */
 #endif
 
 } ATOM_TCB;