diff --git a/actions/ost-compare-ligand-structures b/actions/ost-compare-ligand-structures
index 3cff1249a5e537079652c5b284413a516746e212..7561e920128bd8c4b29cb84d5a20f7377c858efc 100644
--- a/actions/ost-compare-ligand-structures
+++ b/actions/ost-compare-ligand-structures
@@ -530,6 +530,9 @@ def _LoadStructureData(receptor_path,
     else:
         raise RuntimeError("This should never happen")
 
+    # assign filename as name to receptor
+    receptor.SetName(receptor_path)
+
     return (receptor, ligands)