diff --git a/src/ahriman/application/handlers/patch.py b/src/ahriman/application/handlers/patch.py
index c0453db5..ef58e068 100644
--- a/src/ahriman/application/handlers/patch.py
+++ b/src/ahriman/application/handlers/patch.py
@@ -130,12 +130,11 @@ class Patch(Handler):
             variables(list[str] | None): extract patches only for specified PKGBUILD variables
             exit_code(bool): exit with error on empty search result
         """
-        patches = []
-        if variables is not None:
-            for variable in variables:
-                patches.extend(application.reporter.package_patches_get(package_base, variable))
-        else:
-            patches = application.reporter.package_patches_get(package_base, variables)
+        patches = [
+            patch
+            for patch in application.reporter.package_patches_get(package_base, None)
+            if variables is None or patch.key in variables
+        ]
         Patch.check_if_empty(exit_code, not patches)
 
         PatchPrinter(package_base, patches)(verbose=True, separator=" = ")
@@ -154,4 +153,4 @@ class Patch(Handler):
             for variable in variables:  # iterate over single variable
                 application.reporter.package_patches_remove(package_base, variable)
         else:
-            application.reporter.package_patches_remove(package_base, variables)  # just pass as is
+            application.reporter.package_patches_remove(package_base, None)  # just pass as is
diff --git a/src/ahriman/web/schemas/patch_schema.py b/src/ahriman/web/schemas/patch_schema.py
index aa6cebb5..56032128 100644
--- a/src/ahriman/web/schemas/patch_schema.py
+++ b/src/ahriman/web/schemas/patch_schema.py
@@ -25,8 +25,8 @@ class PatchSchema(Schema):
     request and response patch schema
     """
 
-    key = fields.String(required=True, metadata={
-        "description": "environment variable name",
+    key = fields.String(metadata={
+        "description": "environment variable name. Required in case if it is not full diff",
     })
     value = fields.String(metadata={
         "description": "environment variable value",
diff --git a/src/ahriman/web/views/v1/packages/patches.py b/src/ahriman/web/views/v1/packages/patches.py
index f54b7fba..8b068ed4 100644
--- a/src/ahriman/web/views/v1/packages/patches.py
+++ b/src/ahriman/web/views/v1/packages/patches.py
@@ -96,7 +96,7 @@ class PatchesView(StatusViewGuard, BaseView):
 
         try:
             data = await self.request.json()
-            key = data["key"]
+            key = data.get("key")
             value = data["value"]
         except Exception as ex:
             raise HTTPBadRequest(reason=str(ex))
diff --git a/tests/ahriman/application/handlers/test_handler_patch.py b/tests/ahriman/application/handlers/test_handler_patch.py
index ecbf9d4e..97be1632 100644
--- a/tests/ahriman/application/handlers/test_handler_patch.py
+++ b/tests/ahriman/application/handlers/test_handler_patch.py
@@ -161,12 +161,12 @@ def test_patch_set_list(application: Application, mocker: MockerFixture) -> None
     must list available patches for the command
     """
     get_mock = mocker.patch("ahriman.core.status.local_client.LocalClient.package_patches_get",
-                            return_value=[PkgbuildPatch(None, "patch")])
+                            return_value=[PkgbuildPatch(None, "patch"), PkgbuildPatch("version", "value")])
     print_mock = mocker.patch("ahriman.core.formatters.Printer.print")
     check_mock = mocker.patch("ahriman.application.handlers.Handler.check_if_empty")
 
     Patch.patch_set_list(application, "ahriman", ["version"], False)
-    get_mock.assert_called_once_with("ahriman", "version")
+    get_mock.assert_called_once_with("ahriman", None)
     print_mock.assert_called_once_with(verbose=True, log_fn=pytest.helpers.anyvar(int), separator=" = ")
     check_mock.assert_called_once_with(False, False)
 
diff --git a/tests/ahriman/web/views/v1/packages/test_view_v1_packages_patches.py b/tests/ahriman/web/views/v1/packages/test_view_v1_packages_patches.py
index fee9bc0f..b337e968 100644
--- a/tests/ahriman/web/views/v1/packages/test_view_v1_packages_patches.py
+++ b/tests/ahriman/web/views/v1/packages/test_view_v1_packages_patches.py
@@ -64,6 +64,24 @@ async def test_post(client: TestClient, package_ahriman: Package) -> None:
     assert patches == [payload]
 
 
+async def test_post_full_diff(client: TestClient, package_ahriman: Package) -> None:
+    """
+    must create patch from full diff
+    """
+    await client.post(f"/api/v1/packages/{package_ahriman.base}",
+                      json={"status": BuildStatusEnum.Success.value, "package": package_ahriman.view()})
+    request_schema = pytest.helpers.schema_request(PatchesView.post)
+
+    payload = {"value": "v"}
+    assert not request_schema.validate(payload)
+    response = await client.post(f"/api/v1/packages/{package_ahriman.base}/patches", json=payload)
+    assert response.status == 204
+
+    response = await client.get(f"/api/v1/packages/{package_ahriman.base}/patches")
+    patches = await response.json()
+    assert patches == [payload]
+
+
 async def test_post_exception(client: TestClient, package_ahriman: Package) -> None:
     """
     must raise exception on invalid payload