diff --git a/3d-viewer/dialogs/panel_preview_3d_model_base.cpp b/3d-viewer/dialogs/panel_preview_3d_model_base.cpp
index 7644df2029..3739d0ac2b 100644
--- a/3d-viewer/dialogs/panel_preview_3d_model_base.cpp
+++ b/3d-viewer/dialogs/panel_preview_3d_model_base.cpp
@@ -196,7 +196,7 @@ PANEL_PREVIEW_3D_MODEL_BASE::PANEL_PREVIEW_3D_MODEL_BASE( wxWindow* parent, wxWi
 	bSizer3DButtons = new wxBoxSizer( wxVERTICAL );
 
 
-	bSizer3DButtons->Add( 0, 0, 1, wxEXPAND, 5 );
+	bSizer3DButtons->Add( 0, 14, 0, wxEXPAND, 5 );
 
 	m_bpvISO = new STD_BITMAP_BUTTON( this, wxID_ANY, wxNullBitmap, wxDefaultPosition, wxSize( -1,-1 ), wxBU_AUTODRAW|0 );
 	m_bpvISO->SetToolTip( _("Enable/disable orthographic projection") );
@@ -238,10 +238,7 @@ PANEL_PREVIEW_3D_MODEL_BASE::PANEL_PREVIEW_3D_MODEL_BASE( wxWindow* parent, wxWi
 	bSizer3DButtons->Add( m_bpUpdate, 0, wxTOP, 5 );
 
 	m_bpSettings = new STD_BITMAP_BUTTON( this, wxID_ANY, wxNullBitmap, wxDefaultPosition, wxDefaultSize, wxBU_AUTODRAW|0 );
-	bSizer3DButtons->Add( m_bpSettings, 0, wxTOP, 5 );
-
-
-	bSizer3DButtons->Add( 0, 10, 1, wxEXPAND, 5 );
+	bSizer3DButtons->Add( m_bpSettings, 0, wxTOP|wxBOTTOM, 5 );
 
 
 	bSizermain->Add( bSizer3DButtons, 0, wxEXPAND|wxRIGHT, 5 );
diff --git a/3d-viewer/dialogs/panel_preview_3d_model_base.fbp b/3d-viewer/dialogs/panel_preview_3d_model_base.fbp
index 5e859ef18f..b41f1a870d 100644
--- a/3d-viewer/dialogs/panel_preview_3d_model_base.fbp
+++ b/3d-viewer/dialogs/panel_preview_3d_model_base.fbp
@@ -2075,9 +2075,9 @@
             <object class="sizeritem" expanded="true">
               <property name="border">5</property>
               <property name="flag">wxEXPAND</property>
-              <property name="proportion">1</property>
+              <property name="proportion">0</property>
               <object class="spacer" expanded="true">
-                <property name="height">0</property>
+                <property name="height">14</property>
                 <property name="permission">protected</property>
                 <property name="width">0</property>
               </object>
@@ -2779,7 +2779,7 @@
             </object>
             <object class="sizeritem" expanded="true">
               <property name="border">5</property>
-              <property name="flag">wxTOP</property>
+              <property name="flag">wxTOP|wxBOTTOM</property>
               <property name="proportion">0</property>
               <object class="wxBitmapButton" expanded="true">
                 <property name="BottomDockable">1</property>
@@ -2852,16 +2852,6 @@
                 <event name="OnButtonClick">View3DSettings</event>
               </object>
             </object>
-            <object class="sizeritem" expanded="true">
-              <property name="border">5</property>
-              <property name="flag">wxEXPAND</property>
-              <property name="proportion">1</property>
-              <object class="spacer" expanded="true">
-                <property name="height">10</property>
-                <property name="permission">protected</property>
-                <property name="width">0</property>
-              </object>
-            </object>
           </object>
         </object>
       </object>