diff --git a/things/model/src/main/java/org/eclipse/ditto/things/model/ImmutableAttributes.java b/things/model/src/main/java/org/eclipse/ditto/things/model/ImmutableAttributes.java
index 4177bbae93..0cca326945 100755
--- a/things/model/src/main/java/org/eclipse/ditto/things/model/ImmutableAttributes.java
+++ b/things/model/src/main/java/org/eclipse/ditto/things/model/ImmutableAttributes.java
@@ -221,7 +221,7 @@ public boolean contains(final CharSequence key) {
 
     @Override
     public boolean containsFlatteningArrays(final CharSequence key) {
-        return wrapped.contains(key);
+        return wrapped.containsFlatteningArrays(key);
     }
 
     @Override
diff --git a/things/model/src/main/java/org/eclipse/ditto/things/model/ImmutableFeatureProperties.java b/things/model/src/main/java/org/eclipse/ditto/things/model/ImmutableFeatureProperties.java
index f8d57c5a81..28ca131916 100755
--- a/things/model/src/main/java/org/eclipse/ditto/things/model/ImmutableFeatureProperties.java
+++ b/things/model/src/main/java/org/eclipse/ditto/things/model/ImmutableFeatureProperties.java
@@ -214,7 +214,7 @@ public boolean contains(final CharSequence key) {
 
     @Override
     public boolean containsFlatteningArrays(final CharSequence key) {
-        return wrapped.contains(key);
+        return wrapped.containsFlatteningArrays(key);
     }
 
     @Override