diff --git a/src/galdynamix/potential/_potential/composite.py b/src/galdynamix/potential/_potential/composite.py
index 077f692a..3c0b3a15 100644
--- a/src/galdynamix/potential/_potential/composite.py
+++ b/src/galdynamix/potential/_potential/composite.py
@@ -30,7 +30,7 @@ class CompositePotential(ImmutableDict[AbstractPotentialBase], AbstractPotential
         static=True,
         converter=lambda x: dimensionless if x is None else UnitSystem(x),
     )
-    _G: float = eqx.field(init=False, static=True)
+    _G: float = eqx.field(init=False, static=True, repr=False)
 
     def __init__(
         self,