diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1f95d6b9..6134047d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,15 +1,13 @@
-<<<<<<< HEAD
 ### Upcoming
 
- - improvements to the real-time profile editor,
- - `hours_elapsed()` is a function in profile expressions.
- - Breaking change: `log` in experiment profiles now uses expressions.
+ - improvements to the UI's experiment profile preview. It's so pretty!
+ - `hours_elapsed()` is a function in profile expressions, which returns the hours since the profile started.
+ - `unit()` can be used in mqtt fetch expressions. Example: `unit():stirring:target_rpm` is identical to `::stirring:target_rpm`. The latter can be seen as a shortened version of the former.
+ - Breaking change: `log` in experiment profiles now uses expressions instead of python formatting. For example: `The unit {unit} is running {job} in experiment {experiment}` should be replaced by expressions in the string: `The unit ${{unit()}} is running ${{job_name()}} in the experiment ${{experiment}}`.
  - Updated Raspberry Pi OS image to 2024-07-04.
 
-### 24.7.5 & 24.7.6
-=======
+
 ### 24.7.5 & 24.7.6 & 24.7.7
->>>>>>> master
 
 Hotfix release for 24.7.3. This pins blinka to a specific version which does not install numpy.
 
diff --git a/pioreactor/experiment_profiles/profile_struct.py b/pioreactor/experiment_profiles/profile_struct.py
index 457076a0..c101b672 100644
--- a/pioreactor/experiment_profiles/profile_struct.py
+++ b/pioreactor/experiment_profiles/profile_struct.py
@@ -92,10 +92,11 @@ def __str__(self) -> str:
 
 class Job(Struct, forbid_unknown_fields=True):
     actions: list[Action]
-    # description?
+    description: Optional[str] = None
     # metadata?
     # calibration_settings?
     # config_options?
+    # logging?
 
 
 PioreactorUnitName = str
diff --git a/pioreactor/tests/test_execute_experiment_profile.py b/pioreactor/tests/test_execute_experiment_profile.py
index 2c7a8cc0..550e1ab1 100644
--- a/pioreactor/tests/test_execute_experiment_profile.py
+++ b/pioreactor/tests/test_execute_experiment_profile.py
@@ -604,6 +604,50 @@ def collection_actions(msg):
     )
 
 
+@patch("pioreactor.actions.leader.experiment_profile._load_experiment_profile")
+def test_execute_experiment_profile_expression_in_common_also_works_with_unit_function(
+    mock__load_experiment_profile, active_workers_in_cluster
+) -> None:
+    job_name = "jobbing"
+
+    for worker in active_workers_in_cluster:
+        publish(f"pioreactor/{worker}/_testing_experiment/{job_name}/target", 10, retain=True)
+
+    action = Start(
+        hours_elapsed=0, options={"target": "${{unit():jobbing:target + 1}}"}, if_="unit():jobbing:target > 0"
+    )
+
+    profile = Profile(
+        experiment_profile_name="test_profile",
+        plugins=[],
+        common=CommonBlock(
+            jobs={
+                job_name: Job(actions=[action]),
+            }
+        ),
+        metadata=Metadata(author="test_author"),
+    )
+
+    mock__load_experiment_profile.return_value = profile
+
+    actions = []
+
+    def collection_actions(msg):
+        actions.append(msg.payload.decode())
+
+    subscribe_and_callback(
+        collection_actions,
+        [f"pioreactor/{worker}/_testing_experiment/run/jobbing" for worker in active_workers_in_cluster],
+        allow_retained=False,
+    )
+
+    execute_experiment_profile("profile.yaml", "_testing_experiment")
+
+    assert actions == ['{"options":{"target":11.0,"job_source":"experiment_profile"},"args":[]}'] * len(
+        active_workers_in_cluster
+    )
+
+
 @patch("pioreactor.actions.leader.experiment_profile._load_experiment_profile")
 def test_execute_experiment_profile_when_action_simple(mock__load_experiment_profile) -> None:
     experiment = "_testing_experiment"