diff --git a/pioreactor/experiment_profiles/parser.py b/pioreactor/experiment_profiles/parser.py
index 1d3c3305..8d7109d2 100644
--- a/pioreactor/experiment_profiles/parser.py
+++ b/pioreactor/experiment_profiles/parser.py
@@ -249,7 +249,7 @@ def expr(self, p) -> bool | float | str:
             return convert_string(value)
 
         else:
-            raise MQTTValueError(f"{p.UNIT_JOB_SETTING} does not exist for experiment `{experiment}`")
+            raise MQTTValueError(f"{data_string} does not exist for experiment `{experiment}`")
 
 
 def parse_profile_expression_to_bool(profile_string: str, env=None) -> bool:
diff --git a/pioreactor/tests/test_execute_experiment_profile.py b/pioreactor/tests/test_execute_experiment_profile.py
index 1b2eaf1b..3c5f9cd6 100644
--- a/pioreactor/tests/test_execute_experiment_profile.py
+++ b/pioreactor/tests/test_execute_experiment_profile.py
@@ -11,6 +11,7 @@
 from pioreactor.actions.leader.experiment_profile import _verify_experiment_profile
 from pioreactor.actions.leader.experiment_profile import execute_experiment_profile
 from pioreactor.actions.leader.experiment_profile import hours_to_seconds
+from pioreactor.actions.leader.experiment_profile import seconds_to_hours
 from pioreactor.background_jobs.stirring import start_stirring
 from pioreactor.experiment_profiles.profile_struct import _LogOptions
 from pioreactor.experiment_profiles.profile_struct import CommonBlock
@@ -31,13 +32,18 @@
 from pioreactor.utils.timing import current_utc_datetime
 
 
-# First test the hours_to_seconds function
 def test_hours_to_seconds() -> None:
     assert hours_to_seconds(1) == 3600
     assert hours_to_seconds(0.5) == 1800
     assert hours_to_seconds(0) == 0
 
 
+def test_seconds_to_hours() -> None:
+    assert seconds_to_hours(3600.0) == 1
+    assert seconds_to_hours(3600) == 1
+    assert seconds_to_hours(0) == 0
+
+
 @patch("pioreactor.actions.leader.experiment_profile._load_experiment_profile")
 def test_execute_experiment_profile_order(
     mock__load_experiment_profile,