diff --git a/pandora_server/ChangeLog b/pandora_server/ChangeLog
index 8291daf316..9dab56b704 100644
--- a/pandora_server/ChangeLog
+++ b/pandora_server/ChangeLog
@@ -1,3 +1,8 @@
+2010-07-07  Ramon Novoa  <rnovoa@artica.es>
+
+	* lib/PandoraFMS/Core.pm: Verify that log4x data is available
+	  before trying to read it.
+
 2010-07-06  Dario Rodriguez <dario.rodriguez@artica.es>
 
 	* lib/PandoraFMS/Core.pm, ReconServer.pm, DataServer.pm: Delete 
diff --git a/pandora_server/lib/PandoraFMS/Core.pm b/pandora_server/lib/PandoraFMS/Core.pm
index a7d4b846af..e15c9c7047 100644
--- a/pandora_server/lib/PandoraFMS/Core.pm
+++ b/pandora_server/lib/PandoraFMS/Core.pm
@@ -1493,6 +1493,7 @@ sub log4x_get_severity_num($) {
 	my ($dataObject) = @_;
 	my $data = $dataObject->{'severity'};
 		
+	return undef unless defined ($data);
 	# The severity is a word, so we need to translate to numbers
 		
 	if ($data =~ m/^trace$/i) {