diff --git a/extra/ui/gadgets/packs/packs.factor b/extra/ui/gadgets/packs/packs.factor
old mode 100644
new mode 100755
index dd10449034..8ac427d087
--- a/extra/ui/gadgets/packs/packs.factor
+++ b/extra/ui/gadgets/packs/packs.factor
@@ -1,7 +1,7 @@
 ! Copyright (C) 2005, 2007 Slava Pestov.
 ! See http://factorcode.org/license.txt for BSD license.
-USING: sequences ui.gadgets kernel math math.vectors
-namespaces ;
+USING: sequences ui.gadgets kernel math math.functions
+math.vectors namespaces ;
 IN: ui.gadgets.packs
 
 TUPLE: pack align fill gap ;
diff --git a/extra/ui/gadgets/sliders/sliders.factor b/extra/ui/gadgets/sliders/sliders.factor
old mode 100644
new mode 100755
index 5a245e7651..c38f8e9d11
--- a/extra/ui/gadgets/sliders/sliders.factor
+++ b/extra/ui/gadgets/sliders/sliders.factor
@@ -3,7 +3,7 @@
 USING: arrays ui.gestures ui.gadgets ui.gadgets.buttons
 ui.gadgets.controls ui.gadgets.frames ui.gadgets.grids
 ui.gadgets.theme ui.render kernel math namespaces sequences
-vectors models math.vectors quotations colors ;
+vectors models math.vectors math.functions quotations colors ;
 IN: ui.gadgets.sliders
 
 TUPLE: elevator direction ;