diff --git a/helm/blueapi/config_schema.json b/helm/blueapi/config_schema.json
index 070c1ad981..fd9e958cdf 100644
--- a/helm/blueapi/config_schema.json
+++ b/helm/blueapi/config_schema.json
@@ -105,16 +105,7 @@
             "description": "Config for the RunEngine environment",
             "properties": {
                 "sources": {
-                    "default": [
-                        {
-                            "module": "dodal.plans",
-                            "kind": "planFunctions"
-                        },
-                        {
-                            "module": "dodal.plan_stubs.wrapped",
-                            "kind": "planFunctions"
-                        }
-                    ],
+                    "default": [],
                     "items": {
                         "discriminator": {
                             "mapping": {
diff --git a/helm/blueapi/values.schema.json b/helm/blueapi/values.schema.json
index 71c8a53954..7e088f96ae 100644
--- a/helm/blueapi/values.schema.json
+++ b/helm/blueapi/values.schema.json
@@ -554,16 +554,7 @@
                 },
                 "sources": {
                     "title": "Sources",
-                    "default": [
-                        {
-                            "kind": "planFunctions",
-                            "module": "dodal.plans"
-                        },
-                        {
-                            "kind": "planFunctions",
-                            "module": "dodal.plan_stubs.wrapped"
-                        }
-                    ],
+                    "default": [],
                     "type": "array",
                     "items": {
                         "oneOf": [
diff --git a/src/blueapi/config.py b/src/blueapi/config.py
index f58ae9b389..c7c38f91ca 100644
--- a/src/blueapi/config.py
+++ b/src/blueapi/config.py
@@ -140,10 +140,7 @@ class EnvironmentConfig(BlueapiBaseModel):
             PlanSource | DeviceManagerSource,
             Field(discriminator="kind"),
         ]
-    ] = [
-        PlanSource(module="dodal.plans"),
-        PlanSource(module="dodal.plan_stubs.wrapped"),
-    ]
+    ] = Field(default=[])
     events: WorkerEventConfig = Field(default_factory=WorkerEventConfig)
     metadata: MetadataConfig | None = Field(default=None)
 
diff --git a/tests/unit_tests/worker/test_task_worker.py b/tests/unit_tests/worker/test_task_worker.py
index 41041c5018..f03ba7c5fe 100644
--- a/tests/unit_tests/worker/test_task_worker.py
+++ b/tests/unit_tests/worker/test_task_worker.py
@@ -20,7 +20,7 @@
 )
 from ophyd_async.core import AsyncStatus
 
-from blueapi.config import DeviceManagerSource, EnvironmentConfig
+from blueapi.config import DeviceManagerSource, EnvironmentConfig, PlanSource
 from blueapi.core import BlueskyContext, EventStream
 from blueapi.core.bluesky_types import DataEvent
 from blueapi.service.model import PlanModel
@@ -109,7 +109,12 @@ def second_fake_device() -> FakeDevice:
 @pytest.fixture
 def context(fake_device: FakeDevice, second_fake_device: FakeDevice) -> BlueskyContext:
     ctx = BlueskyContext()
-    ctx_config = EnvironmentConfig()
+    ctx_config = EnvironmentConfig(
+        sources=[
+            PlanSource(module="dodal.plans"),
+            PlanSource(module="dodal.plan_stubs.wrapped"),
+        ]
+    )
     ctx_config.sources.append(DeviceManagerSource(module="devices"))
     ctx.register_plan(failing_plan)
     ctx.register_device(fake_device)
@@ -121,7 +126,12 @@ def context(fake_device: FakeDevice, second_fake_device: FakeDevice) -> BlueskyC
 @pytest.fixture
 def context_without_devices() -> BlueskyContext:
     ctx = BlueskyContext()
-    ctx_config = EnvironmentConfig()
+    ctx_config = EnvironmentConfig(
+        sources=[
+            PlanSource(module="dodal.plans"),
+            PlanSource(module="dodal.plan_stubs.wrapped"),
+        ]
+    )
     ctx_config.sources.append(DeviceManagerSource(module="devices"))
     ctx.with_config(ctx_config)
     return ctx