diff --git a/bonobo/core/__init__.py b/bonobo/core/__init__.py
deleted file mode 100644
index 086efcc..0000000
--- a/bonobo/core/__init__.py
+++ /dev/null
@@ -1 +0,0 @@
-""" Core required libraries. """
diff --git a/bonobo/execution/node.py b/bonobo/execution/node.py
index ade3472..635068e 100644
--- a/bonobo/execution/node.py
+++ b/bonobo/execution/node.py
@@ -3,15 +3,15 @@ from queue import Empty
 from time import sleep
 
 from bonobo.constants import INHERIT_INPUT, NOT_MODIFIED
-from bonobo.core.inputs import Input
-from bonobo.core.statistics import WithStatistics
 from bonobo.errors import InactiveReadableError
 from bonobo.execution.base import LoopingExecutionContext
 from bonobo.structs.bags import Bag
+from bonobo.structs.inputs import Input
 from bonobo.util.compat import deprecated_alias
 from bonobo.util.errors import is_error
 from bonobo.util.iterators import iter_if_not_sequence
 from bonobo.util.objects import get_name
+from bonobo.util.statistics import WithStatistics
 
 
 class NodeExecutionContext(WithStatistics, LoopingExecutionContext):
diff --git a/bonobo/core/inputs.py b/bonobo/structs/inputs.py
similarity index 100%
rename from bonobo/core/inputs.py
rename to bonobo/structs/inputs.py
diff --git a/bonobo/core/statistics.py b/bonobo/util/statistics.py
similarity index 100%
rename from bonobo/core/statistics.py
rename to bonobo/util/statistics.py
diff --git a/tests/core/test_inputs.py b/tests/structs/test_inputs.py
similarity index 97%
rename from tests/core/test_inputs.py
rename to tests/structs/test_inputs.py
index 5739dc3..d2ce827 100644
--- a/tests/core/test_inputs.py
+++ b/tests/structs/test_inputs.py
@@ -19,8 +19,8 @@ from queue import Empty
 import pytest
 
 from bonobo.constants import BEGIN, END
-from bonobo.core.inputs import Input
 from bonobo.errors import InactiveWritableError, InactiveReadableError
+from bonobo.structs.inputs import Input
 
 
 def test_input_runlevels():
diff --git a/tests/core/test_statistics.py b/tests/util/test_statistics.py
similarity index 83%
rename from tests/core/test_statistics.py
rename to tests/util/test_statistics.py
index 9b05175..bb787eb 100644
--- a/tests/core/test_statistics.py
+++ b/tests/util/test_statistics.py
@@ -1,4 +1,4 @@
-from bonobo.core.statistics import WithStatistics
+from bonobo.util.statistics import WithStatistics
 
 
 class MyThingWithStats(WithStatistics):