diff --git a/gui.cc b/gui.cc
index 82b4457..56a033b 100644
--- a/gui.cc
+++ b/gui.cc
@@ -143,7 +143,7 @@ gboolean cb_thread_filter (gpointer data) {
 
 
 //
-// callback from filter thread. Data will point to the temp VideoFrame.
+// callback from detect thread. Data will point to the temp VideoFrame.
 // this is propabely the object detection
 // Access to this data must be Locked before use and pointers must be looked to
 gboolean cb_thread_detect (gpointer data) {
diff --git a/simpleskycam.ui b/simpleskycam.ui
index 08f4a45..4a0428b 100644
--- a/simpleskycam.ui
+++ b/simpleskycam.ui
@@ -18,7 +18,7 @@
       <object class="GtkBox">
         <property name="visible">True</property>
         <property name="can-focus">False</property>
-        <property name="valign">start</property>
+        <property name="halign">start</property>
         <property name="orientation">vertical</property>
         <property name="spacing">3</property>
         <property name="baseline-position">top</property>
@@ -225,17 +225,20 @@
               <object class="GtkExpander">
                 <property name="visible">True</property>
                 <property name="can-focus">True</property>
+                <property name="halign">start</property>
+                <property name="valign">start</property>
                 <child>
                   <object class="GtkBox">
                     <property name="visible">True</property>
                     <property name="can-focus">False</property>
+                    <property name="halign">start</property>
+                    <property name="valign">start</property>
                     <child>
                       <object class="GtkBox">
                         <property name="visible">True</property>
                         <property name="can-focus">False</property>
+                        <property name="halign">start</property>
                         <property name="valign">start</property>
-                        <property name="hexpand">True</property>
-                        <property name="vexpand">True</property>
                         <child>
                           <object class="GtkLabel">
                             <property name="visible">True</property>
@@ -256,6 +259,8 @@
                           <object class="GtkScale" id="detect-scale-bright">
                             <property name="visible">True</property>
                             <property name="can-focus">True</property>
+                            <property name="halign">start</property>
+                            <property name="valign">start</property>
                             <property name="adjustment">detect-pos-adjbright</property>
                             <property name="lower-stepper-sensitivity">on</property>
                             <property name="upper-stepper-sensitivity">on</property>
@@ -288,6 +293,8 @@
                             <property name="visible">True</property>
                             <property name="can-focus">True</property>
                             <property name="receives-default">False</property>
+                            <property name="halign">start</property>
+                            <property name="valign">start</property>
                             <property name="draw-indicator">True</property>
                             <property name="group">detect-pos-cbbright</property>
                             <signal name="toggled" handler="cb_detect_detecttype" swapped="no"/>
@@ -304,6 +311,8 @@
                             <property name="visible">True</property>
                             <property name="can-focus">True</property>
                             <property name="receives-default">False</property>
+                            <property name="halign">start</property>
+                            <property name="valign">start</property>
                             <property name="draw-indicator">True</property>
                             <property name="group">detect-pos-cboff</property>
                             <signal name="toggled" handler="cb_detect_detecttype" swapped="no"/>
@@ -353,6 +362,8 @@
                   <object class="GtkBox">
                     <property name="visible">True</property>
                     <property name="can-focus">False</property>
+                    <property name="halign">start</property>
+                    <property name="valign">start</property>
                     <property name="orientation">vertical</property>
                     <child>
                       <object class="GtkRadioButton" id="detect-type-indet0">
@@ -416,6 +427,8 @@
                   <object class="GtkLabel">
                     <property name="visible">True</property>
                     <property name="can-focus">False</property>
+                    <property name="halign">start</property>
+                    <property name="valign">start</property>
                     <property name="label" translatable="yes">Follow Object</property>
                   </object>
                 </child>
@@ -435,13 +448,18 @@
         </child>
         <child>
           <object class="GtkDrawingArea" id="temp-da">
+            <property name="width-request">100</property>
+            <property name="height-request">100</property>
             <property name="visible">True</property>
             <property name="can-focus">False</property>
+            <property name="hexpand">True</property>
+            <property name="vexpand">True</property>
             <signal name="draw" handler="cb_imagetempda_draw" swapped="no"/>
           </object>
           <packing>
             <property name="expand">True</property>
             <property name="fill">True</property>
+            <property name="padding">2</property>
             <property name="position">2</property>
           </packing>
         </child>