diff --git a/macros/asm_macros.asm b/macros/asm_macros.asm
index 5f4e26e1..19908751 100755
--- a/macros/asm_macros.asm
+++ b/macros/asm_macros.asm
@@ -132,8 +132,12 @@ overworldMapCoord: MACRO
 ENDM
 
 ; macro for two nibbles
-dn: MACRO
-	db (\1 << 4 | \2)
+dn: MACRO ; nybbles
+rept _NARG / 2
+	db ((\1) << 4) | (\2)
+	shift
+	shift
+endr
 ENDM
 
 ; macro for putting a byte then a word