diff --git a/handbook/survey/gps.htm b/handbook/survey/gps.htm
index 37a01b8d6..e66242d1f 100644
--- a/handbook/survey/gps.htm
+++ b/handbook/survey/gps.htm
@@ -36,7 +36,7 @@ and GPS devices don't generally tell you how inaccurate the altitude is.
 
 <p>Once you have chosen your point, mark it in some way (could be a spit hole
 or a cairn, for example - we aren't supposed to use paint any more) and place
-the GPS on the point. Don't build a cairn, they don't last for decades and we have survey stations that old. Give the GPS device a
+the GPS on the point. Don't build a cairn, they don't last for decades and we have survey stations that provide permanent locations. Give the GPS device a
 couple of minutes to get a fairly good fix (the first figure reported may be
 quite a way out, but after a couple of minutes things should settle). Then mark
 the point as a waypoint. If you're feeling really keen, you can set it up for