diff --git a/src/Mod/TechDraw/Gui/Resources/icons/TechDraw_ExtensionLockUnlockView.svg b/src/Mod/TechDraw/Gui/Resources/icons/TechDraw_ExtensionLockUnlockView.svg
index 561204d863..8dd4522e57 100644
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diff --git a/src/Mod/TechDraw/Gui/Resources/icons/TechDraw_Lock.svg b/src/Mod/TechDraw/Gui/Resources/icons/TechDraw_Lock.svg
index 7aee5b950e..b016479837 100644
--- a/src/Mod/TechDraw/Gui/Resources/icons/TechDraw_Lock.svg
+++ b/src/Mod/TechDraw/Gui/Resources/icons/TechDraw_Lock.svg
@@ -1,19 +1,30 @@
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+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:dc="http://purl.org/dc/elements/1.1/">
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           </cc:Agent>
         </dc:publisher>
-        <dc:identifier></dc:identifier>
+        <dc:identifier />
         <dc:rights>
           <cc:Agent>
             <dc:title>FreeCAD LGPL2+</dc:title>
@@ -400,46 +419,42 @@
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         <dc:contributor>
           <cc:Agent>
-            <dc:title></dc:title>
+            <dc:title />
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