diff --git a/labsw/mech/Makefile b/labsw/mech/Makefile
index c458b84..b995df2 100644
--- a/labsw/mech/Makefile
+++ b/labsw/mech/Makefile
@@ -16,7 +16,7 @@ logo.gp:	front.fpd
 mill.rml mill.gp: front.gp logo.gp
 		./doit BOARD_Z=1.6mm CLEARANCE=3mm || { rm -rf $@; exit 1; }
 
-mill:		mill.tmp
+mill:		mill.rml
 		PORT=/dev/ttyUSB0 $(SPOOL) mill.rml
 
 cng:		mill.gp