diff --git a/Makefile b/Makefile
index 4dca985..53a872b 100644
--- a/Makefile
+++ b/Makefile
@@ -2,7 +2,7 @@ cat: cat.o
 	ld -o cat cat.o
 
 cat.o: cat.s
-	nasm -g -f elf64 cat.s
+	nasm -f elf64 cat.s
 
 .PHONY: clean
 clean:
diff --git a/cat.s b/cat.s
index 5c345e6..74daf88 100644
--- a/cat.s
+++ b/cat.s
@@ -1,4 +1,3 @@
-;; -*- mode: nasm -*-
 %define SYS_open 0x2
 %define SYS_close 0x3
 %define SYS_write 0x1