diff --git a/actions/pm-build-model b/actions/pm-build-model
index f1f9b0ceded4a9681133f7c9db23dec822787651..6dfa741e6d95e09d48c89775af31a76205fcea65 100755
--- a/actions/pm-build-model
+++ b/actions/pm-build-model
@@ -50,7 +50,8 @@ try:
     mhandle = modelling.BuildRawModel(opts.alignments)
     # add profiles if any
     # no psipred predictions are added, as the default modelling pipeline
-    # we're using here never looks at them
+    # we're using here never looks at them. If we need psipred predictions,
+    # pssm files would not be sufficient and we would be restricted to hhm.
     if len(opts.profiles) > 0:
         modelling.SetSequenceProfiles(mhandle, opts.profiles)
     # build final model