diff --git a/li.strolch.utils/src/main/java/li/strolch/utils/collections/MapOfLists.java b/li.strolch.utils/src/main/java/li/strolch/utils/collections/MapOfLists.java
index ce4d2bb5e..3b5cae746 100644
--- a/li.strolch.utils/src/main/java/li/strolch/utils/collections/MapOfLists.java
+++ b/li.strolch.utils/src/main/java/li/strolch/utils/collections/MapOfLists.java
@@ -145,7 +145,7 @@ public class MapOfLists<T, U> {
 		if ((u = getList(key)) == null) {
 			List<U> newValue;
 			if ((newValue = mappingFunction.apply(key)) != null) {
-				addList(key, newValue);
+				this.mapOfLists.put(key, newValue);
 				return newValue;
 			}
 		}
diff --git a/li.strolch.utils/src/main/java/li/strolch/utils/collections/MapOfMaps.java b/li.strolch.utils/src/main/java/li/strolch/utils/collections/MapOfMaps.java
index 2ec70b283..5916559fb 100644
--- a/li.strolch.utils/src/main/java/li/strolch/utils/collections/MapOfMaps.java
+++ b/li.strolch.utils/src/main/java/li/strolch/utils/collections/MapOfMaps.java
@@ -220,7 +220,7 @@ public class MapOfMaps<T, U, V> {
 		if ((u = getMap(key)) == null) {
 			Map<U, V> newValue;
 			if ((newValue = mappingFunction.apply(key)) != null) {
-				addMap(key, newValue);
+				this.mapOfMaps.put(key, newValue);
 				return newValue;
 			}
 		}
diff --git a/li.strolch.utils/src/main/java/li/strolch/utils/collections/MapOfSets.java b/li.strolch.utils/src/main/java/li/strolch/utils/collections/MapOfSets.java
index eb2afa2a0..db9d04889 100644
--- a/li.strolch.utils/src/main/java/li/strolch/utils/collections/MapOfSets.java
+++ b/li.strolch.utils/src/main/java/li/strolch/utils/collections/MapOfSets.java
@@ -163,7 +163,7 @@ public class MapOfSets<T, U> {
 		if ((u = getSet(key)) == null) {
 			Set<U> newValue;
 			if ((newValue = mappingFunction.apply(key)) != null) {
-				addSet(key, newValue);
+				this.mapOfSets.put(key, newValue);
 				return newValue;
 			}
 		}