diff --git a/src/pydase/observer_pattern/observer/property_observer.py b/src/pydase/observer_pattern/observer/property_observer.py
index a686765..9d0b8d1 100644
--- a/src/pydase/observer_pattern/observer/property_observer.py
+++ b/src/pydase/observer_pattern/observer/property_observer.py
@@ -22,7 +22,7 @@ def reverse_dict(original_dict: dict[str, list[str]]) -> dict[str, list[str]]:
 
 def get_property_dependencies(prop: property, prefix: str = "") -> list[str]:
     source_code_string = inspect.getsource(prop.fget)  # type: ignore[arg-type]
-    pattern = r"self\.([^\s\{\}]+)"
+    pattern = r"self\.([^\s\{\}\(\)]+)"
     matches = re.findall(pattern, source_code_string)
     return [prefix + match for match in matches if "(" not in match]
 
diff --git a/tests/data_service/test_data_service_observer.py b/tests/data_service/test_data_service_observer.py
index e06198a..e6e9cb1 100644
--- a/tests/data_service/test_data_service_observer.py
+++ b/tests/data_service/test_data_service_observer.py
@@ -1,8 +1,9 @@
 import logging
 from typing import Any
 
-import pydase
 import pytest
+
+import pydase
 from pydase.data_service.data_service_observer import DataServiceObserver
 from pydase.data_service.state_manager import StateManager
 from pydase.utils.serialization.serializer import SerializationError, dump
@@ -241,3 +242,23 @@ def test_read_only_dict_property(caplog: pytest.LogCaptureFixture) -> None:
     service_instance._dict_attr["dotted.key"] = 2.0
 
     assert "'dict_attr[\"dotted.key\"]' changed to '2.0'" in caplog.text
+
+
+def test_dependency_as_function_argument(caplog: pytest.LogCaptureFixture) -> None:
+    class MyObservable(pydase.DataService):
+        some_int = 0
+
+        @property
+        def other_int(self) -> int:
+            return self.add_one(self.some_int)
+
+        def add_one(self, value: int) -> int:
+            return value + 1
+
+    service_instance = MyObservable()
+    state_manager = StateManager(service=service_instance)
+    DataServiceObserver(state_manager)
+
+    service_instance.some_int = 1337
+
+    assert "'other_int' changed to '1338'" in caplog.text