diff --git a/src/main/resources/log4j.properties b/src/main/resources/log4j.properties
index e050a57..addc5d8 100644
--- a/src/main/resources/log4j.properties
+++ b/src/main/resources/log4j.properties
@@ -11,7 +11,8 @@
 #log4j.logger.de.ids_mannheim.korap.query.spans.MatchSpans = TRACE, stdout
 #log4j.logger.de.ids_mannheim.korap.KorapIndex = TRACE, stdout
 #log4j.logger.de.ids_mannheim.korap.KorapMatch = TRACE, stdout
-# log4j.logger.de.ids_mannheim.korap.KorapCollection = TRACE, stdout
+#log4j.logger.de.ids_mannheim.korap.KorapFilter = TRACE, stdout
+#log4j.logger.de.ids_mannheim.korap.KorapCollection = TRACE, stdout
 #log4j.logger.de.ids_mannheim.korap.index.PositionsToOffset = TRACE, stdout
 
 # log4j.logger.de.ids_mannheim.korap.analysis.MultiTermTokenStream = TRACE, stdout