diff --git a/addon/flamenco/gui.py b/addon/flamenco/gui.py
index abad6c86..b0c2a7ff 100644
--- a/addon/flamenco/gui.py
+++ b/addon/flamenco/gui.py
@@ -126,6 +126,7 @@ class FLAMENCO_PT_job_submission(bpy.types.Panel):
         props = layout.operator("flamenco.eval_setting", text="", icon="SCRIPTPLUGINS")
         props.setting_key = setting.key
         props.setting_eval = setting_eval
+        props.eval_description = job_types.eval_description(setting)
 
     def draw_setting_readonly(
         self,
diff --git a/addon/flamenco/job_types.py b/addon/flamenco/job_types.py
index b693d9ca..8150a953 100644
--- a/addon/flamenco/job_types.py
+++ b/addon/flamenco/job_types.py
@@ -91,6 +91,17 @@ def show_eval_on_submit_button(setting: _AvailableJobSetting) -> bool:
     return show_button
 
 
+def eval_description(setting: _AvailableJobSetting) -> str:
+    """Return the 'eval description' of this setting, or an empty string if not found."""
+
+    eval_info = setting.get("eval_info", None)
+    if not eval_info:
+        return ""
+
+    description: str = eval_info.get("description", "")
+    return description
+
+
 def setting_autoeval_propname(setting: _AvailableJobSetting) -> str:
     """Return the property name of the 'auto-eval' state for this setting."""
     return f"autoeval_{setting.key}"
diff --git a/addon/flamenco/operators.py b/addon/flamenco/operators.py
index 0b6c883b..cefc33ed 100644
--- a/addon/flamenco/operators.py
+++ b/addon/flamenco/operators.py
@@ -143,6 +143,14 @@ class FLAMENCO_OT_eval_setting(FlamencoOpMixin, bpy.types.Operator):
     setting_key: bpy.props.StringProperty(name="Setting Key")  # type: ignore
     setting_eval: bpy.props.StringProperty(name="Python Expression")  # type: ignore
 
+    eval_description: bpy.props.StringProperty(name="Description", options={"HIDDEN"})
+
+    @classmethod
+    def description(cls, context, properties):
+        if not properties.eval_description:
+            return ""  # Causes bl_description to be shown.
+        return f"Set value to: {properties.eval_description}"
+
     def execute(self, context: bpy.types.Context) -> set[str]:
         job = job_submission.job_for_scene(context.scene)
         if job is None: