Properly icons are shown

ubl-settings-bootloader.glade

@@ -1683,6 +1683,7 @@
     <property name="resizable">False</property>
     <property name="modal">True</property>
     <property name="window-position">center</property>
+    <property name="icon-name">com.ublinux.ubl-settings-bootloader</property>
     <property name="type-hint">dialog</property>
     <child>
       <object class="GtkBox">
@@ -1919,7 +1920,7 @@
     <property name="can-focus">False</property>
     <property name="hexpand">True</property>
     <property name="vexpand">True</property>
-    <property name="icon-name">com.ublinux.ubl-settings-datetime</property>
+    <property name="icon-name">com.ublinux.ubl-settings-bootloader</property>
     <child>
       <object class="GtkBox">
         <property name="visible">True</property>
@@ -2187,7 +2188,7 @@
     <property name="resizable">False</property>
     <property name="modal">True</property>
     <property name="default-width">450</property>
-    <property name="icon-name">dialog-question-symbolic</property>
+    <property name="icon-name">com.ublinux.ubl-settings-bootloader</property>
     <child>
       <object class="GtkBox">
         <property name="visible">True</property>
@@ -2386,7 +2387,7 @@
     <property name="can-focus">False</property>
     <property name="hexpand">True</property>
     <property name="vexpand">True</property>
-    <property name="icon-name">com.ublinux.ubl-settings-datetime</property>
+    <property name="icon-name">com.ublinux.ubl-settings-bootloader</property>
     <child>
       <placeholder/>
     </child>