diff --git a/config/userpref.blend b/config/userpref.blend
index c2ddd9e3..feb0ce51 100644
Binary files a/config/userpref.blend and b/config/userpref.blend differ
diff --git a/scripts/addons/cam/utils.py b/scripts/addons/cam/utils.py
index e6ea2035..bde4e6a6 100644
--- a/scripts/addons/cam/utils.py
+++ b/scripts/addons/cam/utils.py
@@ -1047,7 +1047,7 @@ def exportGcodePath(filename,vertslist,operations):
 	
 	if s.unit_settings.system=='METRIC':
 		unitcorr=1000.0
-	elif s.unit_settings.system=='INCH':
+	elif s.unit_settings.system=='IMPERIAL':
 		unitcorr=1/0.0254;
 	else:
 		unitcorr=1;
@@ -1067,7 +1067,7 @@ def exportGcodePath(filename,vertslist,operations):
 		###############
 		if s.unit_settings.system=='METRIC':
 			c.metric()
-		elif s.unit_settings.system=='INCH':
+		elif s.unit_settings.system=='IMPERIAL':
 			c.imperial()
 		
 		#start program