diff --git a/tests/unit_tests/utlis/test_structs.py b/tests/unit_tests/utlis/test_structs.py
new file mode 100644
index 00000000..3bda571e
--- /dev/null
+++ b/tests/unit_tests/utlis/test_structs.py
@@ -0,0 +1,8 @@
+import pytest
+
+from zntrack.utils.structs import LazyOption
+
+
+def test_noLazyOptionInit():
+    with pytest.raises(ValueError):
+        LazyOption()
diff --git a/zntrack/utils/__init__.py b/zntrack/utils/__init__.py
index b77b9f1b..28b5e524 100644
--- a/zntrack/utils/__init__.py
+++ b/zntrack/utils/__init__.py
@@ -10,13 +10,13 @@
 """
 
 from zntrack.utils import exceptions, file_io
-from zntrack.utils.config import (
+from zntrack.utils.config import Files, config
+from zntrack.utils.structs import (
     FILE_DVC_TRACKED,
     VALUE_DVC_TRACKED,
     DVCOptions,
-    Files,
+    LazyOption,
     ZnTypes,
-    config,
 )
 from zntrack.utils.utils import (
     check_type,
@@ -52,12 +52,5 @@
     "FILE_DVC_TRACKED",
     "VALUE_DVC_TRACKED",
     "DVCOptions",
+    "LazyOption",
 ]
-
-
-class LazyOption:
-    def __init__(self):
-        raise ValueError(
-            "Can not initialize LazyOption. If you expected something else open an "
-            "issue at https://github.com/zincware/ZnTrack and describe how you got here."
-        )
diff --git a/zntrack/utils/config.py b/zntrack/utils/config.py
index a92835a8..30da511f 100644
--- a/zntrack/utils/config.py
+++ b/zntrack/utils/config.py
@@ -9,7 +9,6 @@
 Description: Configuration File for ZnTrack
 """
 import dataclasses
-import enum
 import logging
 from pathlib import Path
 
@@ -70,45 +69,4 @@ class Files:
     params: Path = Path("params.yaml")
 
 
-class ZnTypes(enum.Enum):
-    """Collection of ZnTrack Types to identify descriptors beyond their dvc option
-
-    Attributes
-    ----------
-    results: most zn.<options> like zn.outs() / zn.metrics() use this one
-    """
-
-    DEPS = enum.auto()
-    DVC = enum.auto()
-    METADATA = enum.auto()
-    # method = enum.auto()
-    PARAMS = enum.auto()
-    ITERABLE = enum.auto()
-    RESULTS = enum.auto()
-
-
-FILE_DVC_TRACKED = [ZnTypes.DVC]
-# if the getattr(instance, self.name) is an affected file,
-# e.g. the dvc.<outs> is a file / list of files
-VALUE_DVC_TRACKED = [ZnTypes.RESULTS, ZnTypes.METADATA]
-
-
-# if the internal file,
-# e.g. in the case of zn.outs() like nodes/<node_name>/outs.json is an affected file
-
-
-class DVCOptions(enum.Enum):
-    # Use enum over dataclass because it is iterable
-    PARAMS = "params"
-    DEPS = "deps"
-    OUTS = "outs"
-    CHECKPOINTS = "checkpoints"
-    OUTS_NO_CACHE = "outs_no_cache"
-    OUTS_PERSISTENT = "outs_persistent"
-    METRICS = "metrics"
-    METRICS_NO_CACHE = "metrics_no_cache"
-    PLOTS = "plots"
-    PLOTS_NO_CACHE = "plots_no_cache"
-
-
 config = Config()
diff --git a/zntrack/utils/structs.py b/zntrack/utils/structs.py
new file mode 100644
index 00000000..f57cfbd3
--- /dev/null
+++ b/zntrack/utils/structs.py
@@ -0,0 +1,50 @@
+import enum
+
+
+class LazyOption:
+    def __init__(self):
+        raise ValueError(
+            "Can not initialize LazyOption. If you expected something else open an "
+            "issue at https://github.com/zincware/ZnTrack and describe how you got here."
+        )
+
+
+class ZnTypes(enum.Enum):
+    """Collection of ZnTrack Types to identify descriptors beyond their dvc option
+
+    Attributes
+    ----------
+    results: most zn.<options> like zn.outs() / zn.metrics() use this one
+    """
+
+    DEPS = enum.auto()
+    DVC = enum.auto()
+    METADATA = enum.auto()
+    # method = enum.auto()
+    PARAMS = enum.auto()
+    ITERABLE = enum.auto()
+    RESULTS = enum.auto()
+
+
+FILE_DVC_TRACKED = [ZnTypes.DVC]
+# if the getattr(instance, self.name) is an affected file,
+# e.g. the dvc.<outs> is a file / list of files
+VALUE_DVC_TRACKED = [ZnTypes.RESULTS, ZnTypes.METADATA]
+
+
+# if the internal file,
+# e.g. in the case of zn.outs() like nodes/<node_name>/outs.json is an affected file
+
+
+class DVCOptions(enum.Enum):
+    # Use enum over dataclass because it is iterable
+    PARAMS = "params"
+    DEPS = "deps"
+    OUTS = "outs"
+    CHECKPOINTS = "checkpoints"
+    OUTS_NO_CACHE = "outs_no_cache"
+    OUTS_PERSISTENT = "outs_persistent"
+    METRICS = "metrics"
+    METRICS_NO_CACHE = "metrics_no_cache"
+    PLOTS = "plots"
+    PLOTS_NO_CACHE = "plots_no_cache"