diff --git a/src/pydase/units.py b/src/pydase/units.py
index 55eaa17..9938b66 100644
--- a/src/pydase/units.py
+++ b/src/pydase/units.py
@@ -3,7 +3,7 @@ from typing import TypedDict
 import pint
 
 units: pint.UnitRegistry = pint.UnitRegistry(autoconvert_offset_to_baseunit=True)
-units.default_format = "~P"  # pretty and short format
+units.formatter.default_format = "~P"  # pretty and short format
 
 Quantity = pint.Quantity
 Unit = units.Unit