diff --git a/arbdmodel/hps_polymer_model.py b/arbdmodel/hps_polymer_model.py
index c8a63274937b74b0986e610cfbe5919d6ccb87c3..f56d43ba7ff9cdb0a480500be686b05eeb906b09 100644
--- a/arbdmodel/hps_polymer_model.py
+++ b/arbdmodel/hps_polymer_model.py
@@ -73,7 +73,7 @@ _types = dict(
                      sigma = 6.18,
                      lambda_ = 0.972973,
                  ),
-    L = ParticleType("LUE",
+    L = ParticleType("LEU",
                      mass = 113.2,
                      charge = 0,
                      sigma = 6.18,
diff --git a/arbdmodel/kh_polymer_model.py b/arbdmodel/kh_polymer_model.py
index ffb7432f625ba030fa4b074d25dea8269f9a4937..4d732a08e3044c9b73e499f087945c960a4c5ab3 100644
--- a/arbdmodel/kh_polymer_model.py
+++ b/arbdmodel/kh_polymer_model.py
@@ -63,7 +63,7 @@ _types = dict(
                      charge = 0,
                      sigma = 6.18,
                  ),
-    L = ParticleType("LUE",
+    L = ParticleType("LEU",
                      mass = 113.2,
                      charge = 0,
                      sigma = 6.18,
diff --git a/arbdmodel/onck_polymer_model.py b/arbdmodel/onck_polymer_model.py
index c15c9de3c699d808b0dfa08ac1cabddb64d1fd75..861f90d64dee96f83483264026d38b2b55c1000d 100644
--- a/arbdmodel/onck_polymer_model.py
+++ b/arbdmodel/onck_polymer_model.py
@@ -66,7 +66,7 @@ _types = dict(
                      charge = 0,
                      epsilon = 0.98,
                  ),
-    L = ParticleType("LUE",
+    L = ParticleType("LEU",
                      mass = 120,
                      charge = 0,
                      epsilon = 1.0,