diff --git a/GNUmakefile b/GNUmakefile
index e1bf7d2a4..c858eecbd 100644
--- a/GNUmakefile
+++ b/GNUmakefile
@@ -5,6 +5,7 @@
 include Common.mak
 
 ### File Extensions
+asm=nasm
 o=o
 
 ### Directories