diff --git a/extra/ui/gadgets/charts/lines/lines.factor b/extra/ui/gadgets/charts/lines/lines.factor
index 9c39d494a6..40a7d654e5 100644
--- a/extra/ui/gadgets/charts/lines/lines.factor
+++ b/extra/ui/gadgets/charts/lines/lines.factor
@@ -2,13 +2,14 @@
 ! See http://factorcode.org/license.txt for BSD license.
 USING: accessors arrays assocs binary-search colors.constants
 combinators combinators.short-circuit fry kernel locals make
-math math.order math.statistics math.vectors namespaces opengl
-opengl.gl sequences
-specialized-arrays.instances.alien.c-types.float
-splitting.monotonic ui.gadgets ui.gadgets.charts
-ui.gadgets.charts.utils ui.render ;
+math math.order math.statistics math.vectors opengl opengl.gl
+sequences specialized-arrays splitting.monotonic ui.gadgets
+ui.gadgets.charts ui.gadgets.charts.utils ui.render ;
+QUALIFIED-WITH: alien.c-types c
 IN: ui.gadgets.charts.lines
 
+SPECIALIZED-ARRAY: c:float
+
 ! Data must be a sequence of { x y } coordinates sorted by
 ! non-descending x vaues.
 TUPLE: line < gadget color data ;