diff --git a/PanDDA2/modulefile b/PanDDA2/modulefile
index 779fe14..4a65bdf 100644
--- a/PanDDA2/modulefile
+++ b/PanDDA2/modulefile
@@ -10,6 +10,12 @@ PanDDA 2 (pandda_2_gemmi) in a self-contained python 3.9 venv, CNN scoring
 models pre-downloaded at build time. ccp4/9.0 is auto-loaded as a runtime
 dependency for pandda.inspect / pandda.export.
 Main entry point: pandda2.analyse
+
+NOTE: classic PanDDA 1 (panddas 0.2.x, python 2) is broken in ccp4 >= 7.1;
+upstream pins it to ccp4 7.0.72 and recommends 7.0.067 for working
+pandda.inspect / pandda.export. The ccp4/9.0 versions loaded here are
+UNVERIFIED - check inspect/export results before trusting them, or use
+PanDDA2Inspect (https://github.com/ConorFWild/PanDDA2Inspect).
 "
 
 setenv          PANDDA2_ENV   $PREFIX/venv