diff --git a/deluge/plugins/Execute/deluge/plugins/execute/core.py b/deluge/plugins/Execute/deluge/plugins/execute/core.py
index c7824e5f0..9dcd97aaa 100644
--- a/deluge/plugins/Execute/deluge/plugins/execute/core.py
+++ b/deluge/plugins/Execute/deluge/plugins/execute/core.py
@@ -154,7 +154,7 @@ class Core(CorePluginBase):
     # Exported RPC methods #
     @export
     def add_command(self, event, command):
-        command_id = hashlib.sha1(str(time.time())).hexdigest()
+        command_id = hashlib.sha1(str(time.time()).encode()).hexdigest()
         self.config['commands'].append((command_id, event, command))
         self.config.save()
         component.get('EventManager').emit(
diff --git a/deluge/plugins/Execute/deluge/plugins/execute/data/execute_prefs.ui b/deluge/plugins/Execute/deluge/plugins/execute/data/execute_prefs.ui
index fc02a54a8..e2a5cd507 100644
--- a/deluge/plugins/Execute/deluge/plugins/execute/data/execute_prefs.ui
+++ b/deluge/plugins/Execute/deluge/plugins/execute/data/execute_prefs.ui
@@ -30,6 +30,7 @@
                 <property name="can_focus">False</property>
                 <property name="top_padding">5</property>
                 <property name="left_padding">12</property>
+                <property name="right_padding">10</property>
                 <child>
                   <object class="GtkTable" id="add_table">
                     <property name="visible">True</property>
@@ -85,6 +86,7 @@
                       <object class="GtkComboBox" id="event_combobox">
                         <property name="visible">True</property>
                         <property name="can_focus">False</property>
+                        <property name="halign">start</property>
                         <property name="model">liststore1</property>
                         <child>
                           <object class="GtkCellRendererText" id="cellrenderertext1"/>
@@ -103,6 +105,7 @@
                       <object class="GtkHButtonBox" id="hbuttonbox1">
                         <property name="visible">True</property>
                         <property name="can_focus">False</property>
+                        <property name="halign">center</property>
                         <property name="layout_style">end</property>
                         <child>
                           <object class="GtkButton" id="button_add">
@@ -164,6 +167,7 @@
                     <property name="visible">True</property>
                     <property name="can_focus">False</property>
                     <property name="events">GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK | GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK</property>
+                    <property name="halign">start</property>
                     <property name="orientation">vertical</property>
                     <child>
                       <placeholder/>