diff --git a/documentation/changelog.rst b/documentation/changelog.rst
index d78be74b2..88977402f 100644
--- a/documentation/changelog.rst
+++ b/documentation/changelog.rst
@@ -25,6 +25,7 @@ v0.4.1 | May XX, 2021
 
 Bugfixes
 -----------
+* Fix regression when editing assets in the UI [see `PR #122 <http://www.github.com/SeitaBV/flexmeasures/pull/122>`_]
 * Prevent logging out user when clearing the session [see `PR #112 <http://www.github.com/SeitaBV/flexmeasures/pull/112>`_]
 * Prevent user type data source to be created without setting a user [see `PR #111 <https://github.com/SeitaBV/flexmeasures/pull/111>`_]
 
diff --git a/flexmeasures/data/transactional.py b/flexmeasures/data/transactional.py
index 920da7397..adbade62c 100644
--- a/flexmeasures/data/transactional.py
+++ b/flexmeasures/data/transactional.py
@@ -59,7 +59,7 @@ def after_request_exception_rollback_session(exception):
 
     Register this on your app via the teardown_request setup method.
     We roll back the session if there was any error (which only has an effect if
-    the session has not yet been comitted).
+    the session has not yet been committed).
 
     Flask-SQLAlchemy is closing the scoped sessions automatically."""
     if exception is not None:
@@ -118,12 +118,13 @@ def wrap(*args, **kwargs):
                 task_run.datetime = datetime.utcnow().replace(tzinfo=pytz.utc)
                 task_run.status = status
                 click.echo(
-                    "Reported task %s status as %s" % (task_function.__name__, status)
+                    "[FLEXMEASURES] Reported task %s status as %s"
+                    % (task_function.__name__, status)
                 )
                 db.session.commit()
             except Exception as e:
                 click.echo(
-                    "[FLEXMEASURES] Could not report the running of Task %s, encountered the following problem: [%s]."
+                    "[FLEXMEASURES] Could not report the running of task %s. Encountered the following problem: [%s]."
                     " The task might have run fine." % (task_function.__name__, str(e))
                 )
                 db.session.rollback()
diff --git a/flexmeasures/ui/crud/assets.py b/flexmeasures/ui/crud/assets.py
index b779a8965..d82be0b6e 100644
--- a/flexmeasures/ui/crud/assets.py
+++ b/flexmeasures/ui/crud/assets.py
@@ -16,6 +16,7 @@
 from flexmeasures.data.models.assets import AssetType, Asset
 from flexmeasures.data.models.user import User
 from flexmeasures.data.models.markets import Market
+from flexmeasures.utils.flexmeasures_inflection import parameterize
 from flexmeasures.ui.utils.plotting_utils import get_latest_power_as_plot
 from flexmeasures.ui.utils.view_utils import render_flexmeasures_template
 from flexmeasures.ui.crud.api_wrapper import InternalApi
@@ -68,13 +69,13 @@ def validate_on_submit(self):
             )
         return super().validate_on_submit()
 
-    def to_json(self) -> dict:
+    def to_json(self, for_posting=False) -> dict:
         """ turn form data into a JSON we can POST to our internal API """
         data = copy.copy(self.data)
-        data["name"] = data["display_name"]  # both are part of the asset model
-        data[
-            "unit"
-        ] = "MW"  # TODO: make unit a choice? this is hard-coded in the UI as well
+        if for_posting:
+            data["name"] = parameterize(
+                data["display_name"]
+            )  # best guess at un-humanizing
         data["capacity_in_mw"] = float(data["capacity_in_mw"])
         data["min_soc_in_mwh"] = float(data["min_soc_in_mwh"])
         data["max_soc_in_mwh"] = float(data["max_soc_in_mwh"])
@@ -248,7 +249,7 @@ def post(self, id: str):
             if form_valid and owner is not None and market is not None:
                 post_asset_response = InternalApi().post(
                     url_for("flexmeasures_api_v2_0.post_assets"),
-                    args=asset_form.to_json(),
+                    args=asset_form.to_json(for_posting=True),
                     do_not_raise_for=[400, 422],
                 )
 
@@ -263,8 +264,11 @@ def post(self, id: str):
                         f"Internal asset API call unsuccessful [{post_asset_response.status_code}]: {post_asset_response.text}"
                     )
                     asset_form.process_api_validation_errors(post_asset_response.json())
-                    if "message" in post_asset_response.json():
-                        error_msg = post_asset_response.json()["message"]
+                    if (
+                        "message" in post_asset_response.json()
+                        and "json" in post_asset_response.json()["message"]
+                    ):
+                        error_msg = str(post_asset_response.json()["message"]["json"])
             if asset is None:
                 msg = "Cannot create asset. " + error_msg
                 return render_flexmeasures_template(
@@ -311,6 +315,7 @@ def post(self, id: str):
                 current_app.logger.error(
                     f"Internal asset API call unsuccessful [{patch_asset_response.status_code}]: {patch_asset_response.text}"
                 )
+                msg = "Cannot edit asset."
                 asset_form.process_api_validation_errors(patch_asset_response.json())
                 asset = Asset.query.get(id)