diff --git a/printf.asm b/printf.asm
index 8027312..fc7cc03 100644
--- a/printf.asm
+++ b/printf.asm
@@ -28,7 +28,7 @@
 ;  O		octal
 ;  S		string
 
- IFUSED	printf#
+ IFUSED	printf#.str
 
 	MODULE printf#
 cmd		EQU	16