diff --git a/lib/xmet/hodograph.py b/lib/xmet/hodograph.py
index 8569fa4..a570f42 100644
--- a/lib/xmet/hodograph.py
+++ b/lib/xmet/hodograph.py
@@ -108,12 +108,13 @@ class Hodograph():
             text    = "%dkt" % speed
             extents = cr.text_extents(text)
 
-            sx, sy = self.sample_to_screen(speed, 180)
+            for angle in (0, 180):
+                sx, sy = self.sample_to_screen(speed, angle)
 
-            cr.move_to(x + sx + extents.width * 0.25,
-                       y + sy - extents.height * 1.5)
-            cr.show_text(text)
-            cr.stroke()
+                cr.move_to(x + sx + extents.width * 0.25,
+                           y + sy - extents.height * 1.5)
+                cr.show_text(text)
+                cr.stroke()
 
         cr.restore()