diff --git a/heightmaps/import-rules.txt b/heightmaps/import-rules.txt
index 9478b35c..69499114 100644
--- a/heightmaps/import-rules.txt
+++ b/heightmaps/import-rules.txt
@@ -1,8 +1,8 @@
 To get heightmap with correct height scale:
-1. Open tangrams.github.io
+1. Open https://tangrams.github.io/heightmapper
 2. Toggle off auto-exposure
 3. Set max elevation to 2000
 4. Set min elevation to -500
 5. Find region you like
 6. Render image
-7. Optionally rescale image to a smaller size (e.g. 500x300px) as high resolution is not used
\ No newline at end of file
+7. Optionally rescale image to a smaller size (e.g. 500x300px) as high resolution is not used