diff --git a/fast_depends/core/builder.py b/fast_depends/core/builder.py
index 85caa060..a7bf5785 100644
--- a/fast_depends/core/builder.py
+++ b/fast_depends/core/builder.py
@@ -1,4 +1,5 @@
 import inspect
+from copy import deepcopy
 from typing import (
     TYPE_CHECKING,
     Any,
@@ -102,7 +103,7 @@ def build_call_model(
                 if isinstance(next_custom, Dependant):
                     dep = next_custom
                 elif isinstance(next_custom, CustomField):
-                    custom = next_custom
+                    custom = deepcopy(next_custom)
                 else:  # pragma: no cover
                     raise AssertionError("unreachable")
 
diff --git a/tests/library/test_custom.py b/tests/library/test_custom.py
index 7acaf2ee..d44f2ec4 100644
--- a/tests/library/test_custom.py
+++ b/tests/library/test_custom.py
@@ -63,6 +63,21 @@ def __init__(self, key: int = Header()):
     assert T(headers={"key": 1}).key == 1
 
 
+def test_reusable_annotated() -> None:
+    HeaderKey = Annotated[float, Header(cast=False)]
+
+    @inject
+    def sync_catch(key: HeaderKey) -> float:
+        return key
+
+    @inject
+    def sync_catch2(key2: HeaderKey) -> float:
+        return key2
+
+    assert sync_catch(headers={"key": 1}) == 1
+    assert sync_catch2(headers={"key2": 1}) == 1
+
+
 @serializer
 class TestSerializer:
     @pytest.mark.anyio