diff --git a/x86_64/0_basic.asm b/x86_64/0_basic.asm
index b06ee22..0eb584a 100644
--- a/x86_64/0_basic.asm
+++ b/x86_64/0_basic.asm
@@ -96,8 +96,8 @@ _start:
 	; AND
 	; OR
 	; XOR
-	; SHR
-	; SHL
+	; SHR -> shift right
+	; SHL -> shift left
 
 	mov rdi, 0x35
 	mov rsi, 0x44