diff --git a/data/gwyddion.xml b/data/gwyddion.xml
index d26089f..acb7b90 100644
--- a/data/gwyddion.xml
+++ b/data/gwyddion.xml
@@ -55,8 +55,8 @@
   <comment>Ambios XML profile data</comment>
   <magic priority="80">
     <match type="string" offset="0" value="&lt;?xml">
-      <match type="string" offset="40:120" value="<ProfilometerData>">
-         <match type="string" offset="60:140" value="<Header>"/>
+      <match type="string" offset="40:120" value="&lt;ProfilometerData&gt;">
+         <match type="string" offset="60:140" value="&lt;Header&gt;"/>
       </match>
     </match>
   </magic>