diff --git a/src/messenger/build.xml b/src/messenger/build.xml
index 20995fb1..293cda2a 100644
--- a/src/messenger/build.xml
+++ b/src/messenger/build.xml
@@ -427,7 +427,7 @@
 
             <filterchain>
                 <!-- Add header -->
-                <concatfilter prepend="compiled_templates_header.txt" />
+                <concatfilter prepend="tools/compiled_templates_header.txt" />
                 <!-- Skip empty lines -->
                 <linecontainsregexp negate="true">
                     <regexp pattern="^\s+$$" />