diff --git a/share/pixmaps/tryton-lock.svg b/share/pixmaps/tryton-lock.svg
new file mode 100644
index 0000000000..693032609a
--- /dev/null
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+        <dc:title>Lock Screen</dc:title>
+        <dc:date />
+        <dc:creator>
+          <cc:Agent>
+            <dc:title>Jakub Steiner</dc:title>
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+            <rdf:li>password</rdf:li>
+            <rdf:li>session</rdf:li>
+            <rdf:li>screensaver</rdf:li>
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diff --git a/share/tryton/tryton.glade b/share/tryton/tryton.glade
index ca01354ef0..e75f8115f8 100644
--- a/share/tryton/tryton.glade
+++ b/share/tryton/tryton.glade
@@ -1422,7 +1422,7 @@
               <widget class="GtkImage" id="secure_img">
                 <property name="visible">True</property>
                 <property name="tooltip" translatable="yes">SSL connection</property>
-                <property name="stock">gtk-dialog-authentication</property>
+                <property name="stock">tryton-lock</property>
               </widget>
               <packing>
                 <property name="expand">False</property>