diff --git a/frigate/config/camera/motion_path.py b/frigate/config/camera/motion_path.py
index fd63a2742..5093dda76 100644
--- a/frigate/config/camera/motion_path.py
+++ b/frigate/config/camera/motion_path.py
@@ -1,6 +1,6 @@
 from typing import Any, Optional, Union
 
-from pydantic import Field, field_serializer
+from pydantic import Field, field_serializer, validator
 
 from ..base import FrigateBaseModel
 
@@ -25,3 +25,11 @@ class MotionPathConfig(FrigateBaseModel):
     @field_serializer("raw_mask", when_used="json")
     def serialize_raw_mask(self, value: Any, info):
         return None
+
+    @validator('max_history')
+    def max_history_range(cls, v):
+        if v < 2:
+            raise ValueError('max_history must be >= 2')
+        if v > 100:
+            raise ValueError('max_history must be <= 100')
+        return v
diff --git a/frigate/test/test_motion_path_config.py b/frigate/test/test_motion_path_config.py
new file mode 100644
index 000000000..24feb0bb8
--- /dev/null
+++ b/frigate/test/test_motion_path_config.py
@@ -0,0 +1,62 @@
+import unittest
+
+from pydantic import ValidationError
+
+from frigate.config.camera.motion_path import MotionPathConfig
+
+
+class TestMotionPathConfig(unittest.TestCase):
+    def setUp(self):
+        self.default_config = {
+            "enabled": True,
+            "max_history": 10,
+            "mask": None,
+            "raw_mask": None,
+        }
+
+    def test_default_motion_path_config(self):
+        motion_path_config = MotionPathConfig(**self.default_config)
+        assert motion_path_config.enabled is True
+        assert motion_path_config.max_history == 10
+        assert motion_path_config.mask is None
+        assert motion_path_config.raw_mask is None
+
+    def test_valid_max_history(self):
+        config = self.default_config.copy()
+        config["max_history"] = 50
+        motion_path_config = MotionPathConfig(**config)
+        assert motion_path_config.max_history == 50
+
+    def test_invalid_max_history_below_minimum(self):
+        config = self.default_config.copy()
+        config["max_history"] = 1
+        with self.assertRaises(ValidationError):
+            MotionPathConfig(**config)
+
+    def test_invalid_max_history_above_maximum(self):
+        config = self.default_config.copy()
+        config["max_history"] = 101
+        with self.assertRaises(ValidationError):
+            MotionPathConfig(**config)
+
+    def test_serialize_mask(self):
+        config = self.default_config.copy()
+        config["raw_mask"] = "test_mask"
+        motion_path_config = MotionPathConfig(**config)
+        assert (
+            motion_path_config.serialize_mask(motion_path_config.mask, None)
+            == "test_mask"
+        )
+
+    def test_serialize_raw_mask(self):
+        config = self.default_config.copy()
+        config["raw_mask"] = "test_mask"
+        motion_path_config = MotionPathConfig(**config)
+        assert (
+            motion_path_config.serialize_raw_mask(motion_path_config.raw_mask, None)
+            is None
+        )
+
+
+if __name__ == "__main__":
+    unittest.main(verbosity=2)