diff --git a/tests/characterization/README.md b/tests/characterization/README.md
index f58e887..4d901c8 100644
--- a/tests/characterization/README.md
+++ b/tests/characterization/README.md
@@ -185,6 +185,9 @@ Still open: the combined bottom + top + side view (`-g bts`) crashes with
 `initCFDGText` in `vgraphics.py` fills the side-view template, which needs
 six numbers, with only four. The `graphics_outputs` scenario pins this.
 
-Also noticed, but not crashes: in `disperseSeed`, the terrain binary search
-calls `elevationFromPixel(thePixelValue)` without `theGarden.maxElevation`,
-so it uses the default 50 m while the first lookup uses the real maximum.
+Also found, not a crash: in `disperseSeed`, the search for a seed's landing
+point on terrain called `elevationFromPixel(thePixelValue)` without
+`theGarden.maxElevation`, so it used the default 50 m range while the lookup
+just before it used the terrain's real range. Fixed, together with the
+direction of the pixel coordinates and the image's pixel range
+(`getPixelRange`); the terrain recordings were re-recorded then.