diff --git a/01-boot-sector/.README.md.swp b/01-boot-sector/.README.md.swp
index 6d766c2..dc243f9 100644
Binary files a/01-boot-sector/.README.md.swp and b/01-boot-sector/.README.md.swp differ
diff --git a/01-boot-sector/README.md b/01-boot-sector/README.md
index 3e44a7b..8b75e10 100644
--- a/01-boot-sector/README.md
+++ b/01-boot-sector/README.md
@@ -10,7 +10,7 @@ To make sure that the "disk is bootable", the BIOS checks that bytes
 
 This is the simplest boot sector ever:
 
-```asm
+```
 e9 fd ff 00 00 00 00 00 00 00 00 00 00 00 00 00
 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 00 00 00 00 00 00 00 00 00 00 00 00 00 00 55 aa