diff --git a/pdb-api/src/test/java/org/lucares/memory/MemoryScale.java b/pdb-api/src/test/java/org/lucares/memory/MemoryScale.java
index c7f68bd..c1a9fe4 100644
--- a/pdb-api/src/test/java/org/lucares/memory/MemoryScale.java
+++ b/pdb-api/src/test/java/org/lucares/memory/MemoryScale.java
@@ -101,7 +101,6 @@ public class MemoryScale {
 	}
 
 	private static Object createPathAsUtf8(final String string) {
-		// TODO Auto-generated method stub
 		return string.getBytes(StandardCharsets.UTF_8);
 	}
 
diff --git a/pdb-plotting/src/main/java/org/lucares/pdb/plot/api/NullCustomAggregator.java b/pdb-plotting/src/main/java/org/lucares/pdb/plot/api/NullCustomAggregator.java
index d6a5eae..7a371d3 100644
--- a/pdb-plotting/src/main/java/org/lucares/pdb/plot/api/NullCustomAggregator.java
+++ b/pdb-plotting/src/main/java/org/lucares/pdb/plot/api/NullCustomAggregator.java
@@ -1,11 +1,11 @@
 package org.lucares.pdb.plot.api;
 
-public class NullCustomAggregator implements CustomAggregator{
+public class NullCustomAggregator implements CustomAggregator {
 
 	@Override
-	public void addValue(long epochMilli, long value) {
-		// TODO Auto-generated method stub
-		
+	public void addValue(final long epochMilli, final long value) {
+		// nothing to do; this is a null-object
+
 	}
 
 	@Override