diff --git a/lib/xmet/hodograph.py b/lib/xmet/hodograph.py
index a2027ff..a14bd6f 100644
--- a/lib/xmet/hodograph.py
+++ b/lib/xmet/hodograph.py
@@ -289,7 +289,11 @@ class Hodograph():
             cr.rectangle(offset + x, y + width * 1.5, width, width)
             cr.stroke()
 
-            text    = "%dm" % (height) if height < 1000 else "%dkm" % (height /1000)
+            if height < 1000:
+                text = "%dm" % (height)
+            else:
+                text = "%dkm" % (int(height / 1000.0))
+
             extents = cr.text_extents(text)
 
             cr.move_to(offset + x - extents.width / 4, y + 3.5*width)