diff --git a/image_analysis/structure_refinement/MolecularReplacement.cpp b/image_analysis/structure_refinement/MolecularReplacement.cpp
index cdbfd64ba..931be4e95 100644
--- a/image_analysis/structure_refinement/MolecularReplacement.cpp
+++ b/image_analysis/structure_refinement/MolecularReplacement.cpp
@@ -2599,9 +2599,9 @@ MolecularReplacementResult search_model(const SearchModel &model, const std::vec
             // are as many as the cell most probably holds: beside content the search has not found, a copy's
             // likelihood over random positions of its own is no measure of the placement. In P1 the first copy sits
             // at the origin, which is arbitrary there and which no function of its position can single out: one copy
-            // is judged by its orientation alone, against the null.
+            // stands out by its orientation alone, where the rotation function's Z-score reaches the same 8.
             else if (!(cand.tf_z >= TF_Z_PLACED || (cand.llg_z >= TF_Z_PLACED && cand.copies >= cand.copies_likely)
-                       || (gops.order() == 1 && cand.copies == 1)))
+                       || (gops.order() == 1 && cand.copies == 1 && cand.rf_z >= TF_Z_PLACED)))
                 cand.verdict = "NOT_PLACED";
             else
                 cand.verdict = "PLACED";