diff --git a/src/main/java/org/warp/commonutils/moshi/MoshiPolymorphic.java b/src/main/java/org/warp/commonutils/moshi/MoshiPolymorphic.java
index 6207cbf..26f5031 100644
--- a/src/main/java/org/warp/commonutils/moshi/MoshiPolymorphic.java
+++ b/src/main/java/org/warp/commonutils/moshi/MoshiPolymorphic.java
@@ -54,7 +54,7 @@ public abstract class MoshiPolymorphic<OBJ> {
 				JsonAdapter<OBJ> adapter = new PolymorphicAdapter<>(name);
 				abstractClassesSerializers.put(declaredClass, adapter);
 				customAdapters.put(name, adapter);
-				abstractMoshiBuilder.addLast(declaredClass, adapter);
+				abstractMoshiBuilder.add(declaredClass, adapter);
 			}
 
 			for (Class<?> declaredClass : concreteClasses) {