diff --git a/tests/unit/test_adapter_core.py b/tests/unit/test_adapter_core.py
index 8775562e..47e0a16c 100644
--- a/tests/unit/test_adapter_core.py
+++ b/tests/unit/test_adapter_core.py
@@ -1,9 +1,11 @@
-from unittest.mock import MagicMock
+from unittest.mock import MagicMock, patch
 from unittest import TestCase
+from tests import MockedPrecice
 import numpy as np
 from fenics import FunctionSpace, VectorFunctionSpace, UnitSquareMesh, SubDomain, near, vertices, Expression, interpolate
 
 
+@patch.dict('sys.modules', {'precice': MockedPrecice})
 class TestAdapterCore(TestCase):
     def test_get_coupling_boundary_edges(self):
         """
diff --git a/tests/unit/test_checkpointing.py b/tests/unit/test_checkpointing.py
index 594e2990..9c609243 100644
--- a/tests/unit/test_checkpointing.py
+++ b/tests/unit/test_checkpointing.py
@@ -1,14 +1,17 @@
-from unittest.mock import MagicMock
+from unittest.mock import MagicMock, patch
 from unittest import TestCase
+from tests import MockedPrecice
 from fenics import FunctionSpace, UnitSquareMesh, Expression, interpolate
-from fenicsprecice.solverstate import SolverState
 
 
+@patch.dict('sys.modules', {'precice': MockedPrecice})
 class TestCheckpointing(TestCase):
     def test_solverstate_basic(self):
         """
         Check if correct values are read from the checkpoint, while the state of the object that is copied is not changed
         """
+        from fenicsprecice.solverstate import SolverState
+
         n = 1
         size = 5
         mesh = UnitSquareMesh(size, size)
@@ -37,6 +40,8 @@ def test_solverstate_modification_vector(self):
 
         Motivation for this test: Related to https://github.com/precice/fenics-adapter/pull/172 and https://github.com/precice/tutorials/pull/554
         """
+        from fenicsprecice.solverstate import SolverState
+
         n = 1
         size = 5
         mesh = UnitSquareMesh(size, size)
@@ -67,6 +72,8 @@ def test_solverstate_modification_assign(self):
         Check if correct values are read from the checkpoint, if the dof of the dolfin functions are changed with the assign function
         and not directly via the dof vector
         """
+        from fenicsprecice.solverstate import SolverState
+
         n = 1
         size = 5
         mesh = UnitSquareMesh(size, size)