diff --git a/python/sdist/amici/petab/parameter_mapping.py b/python/sdist/amici/petab/parameter_mapping.py
index cb37753af5..a5a5d6e867 100644
--- a/python/sdist/amici/petab/parameter_mapping.py
+++ b/python/sdist/amici/petab/parameter_mapping.py
@@ -40,7 +40,6 @@
 from sympy.abc import _clash
 
 from .. import AmiciModel
-from ..parameter_mapping import ParameterMapping, ParameterMappingForCondition
 from . import PREEQ_INDICATOR_ID
 from .util import get_states_in_condition_table