diff --git a/pandora_server/ChangeLog b/pandora_server/ChangeLog
index b2d02a20ab..1b6e534315 100644
--- a/pandora_server/ChangeLog
+++ b/pandora_server/ChangeLog
@@ -1,3 +1,8 @@
+2013-02-28  Sancho Lerena <slerena@artica.es>
+
+	* lib/PandoraFMS/PluginServer.pm: Removed several "Use of uninitialized i
+	value in string" errors.
+
 2013-02-28  Ramon Novoa  <rnovoa@artica.es>
 
 	* bin/pandora_server: Undid the previous commit since forking after
diff --git a/pandora_server/lib/PandoraFMS/PluginServer.pm b/pandora_server/lib/PandoraFMS/PluginServer.pm
index 7a8827999f..587ea45b03 100644
--- a/pandora_server/lib/PandoraFMS/PluginServer.pm
+++ b/pandora_server/lib/PandoraFMS/PluginServer.pm
@@ -152,9 +152,17 @@ sub data_consumer ($$) {
 	
 	# Build command to execute
 	my $command = $plugin->{'execute'};
-	
+
+	if (!defined($plugin->{'parameters'})){
+		$plugin->{'parameters'} = "";
+	}
+		
 	my $parameters = $plugin->{'parameters'};
-	
+
+	if (!defined($module->{'macros'})){
+		$module->{'macros'} = "";
+	}
+
 	# Macros
 	eval {
 		if ($module->{'macros'} ne '') {