diff --git a/build.xml b/build.xml
index 495a7ca31..4893e537e 100644
--- a/build.xml
+++ b/build.xml
@@ -94,7 +94,7 @@
 -->	
 
 <target name="buildSvnRevNr">
-  <delete file="${lib}/svnRevNr.jar" />
+  <delete file="${lib}/svnRevNr.jar" failonerror="false" />
   <javac srcdir="${lib}/svnRevNr" />
   <jar destfile="${lib}/svnRevNr.jar" basedir="${lib}/svnRevNr">
     <manifest>