diff --git a/modules/mol/alg/pymod/lddt.py b/modules/mol/alg/pymod/lddt.py
index ac2458a51e460542a9158bd58b98c71b0677fe40..1453db731b9f6c680ca8ca548a3d04af183218fe 100644
--- a/modules/mol/alg/pymod/lddt.py
+++ b/modules/mol/alg/pymod/lddt.py
@@ -110,6 +110,13 @@ def GetDefaultSymmetrySettings():
         "TYR", [("CD1", "CD2"), ("CE1", "CE2")]
     )
 
+    # nucleotides
+    nuc_names = ["A", "C", "G", "U", "DA", "DC", "DG", "DT"]
+    for nuc_name in nuc_names:
+        symmetry_settings.AddSymmetricCompound(
+            nuc_name, [("OP1","OP2")]
+        )
+
     return symmetry_settings