diff --git a/android/app/src/main/java/fr/iut/sciencequest/model/dto/DifficulteDTO.kt b/android/app/src/main/java/fr/iut/sciencequest/model/dto/DifficulteDTO.kt
index fd3231e..29a9db8 100644
--- a/android/app/src/main/java/fr/iut/sciencequest/model/dto/DifficulteDTO.kt
+++ b/android/app/src/main/java/fr/iut/sciencequest/model/dto/DifficulteDTO.kt
@@ -3,7 +3,7 @@ package fr.iut.sciencequest.model.dto
 import kotlinx.serialization.Serializable
 
 @Serializable
-data class DifficulteDTO (
+class DifficulteDTO (
     val id: Int,
     val libelle: String
 )
\ No newline at end of file
diff --git a/android/app/src/main/java/fr/iut/sciencequest/model/dto/ScientifiqueDTO.kt b/android/app/src/main/java/fr/iut/sciencequest/model/dto/ScientifiqueDTO.kt
index 10ca167..b757a5c 100644
--- a/android/app/src/main/java/fr/iut/sciencequest/model/dto/ScientifiqueDTO.kt
+++ b/android/app/src/main/java/fr/iut/sciencequest/model/dto/ScientifiqueDTO.kt
@@ -4,7 +4,7 @@ import kotlinx.serialization.SerialName
 import kotlinx.serialization.Serializable
 
 @Serializable
-data class ScientifiqueDTO (
+open class ScientifiqueDTO (
     val id: Int,
     val nom: String,
     val prenom: String,
diff --git a/android/app/src/main/java/fr/iut/sciencequest/model/dto/ThematiqueDTO.kt b/android/app/src/main/java/fr/iut/sciencequest/model/dto/ThematiqueDTO.kt
index a1deae5..f41e9ff 100644
--- a/android/app/src/main/java/fr/iut/sciencequest/model/dto/ThematiqueDTO.kt
+++ b/android/app/src/main/java/fr/iut/sciencequest/model/dto/ThematiqueDTO.kt
@@ -3,7 +3,7 @@ package fr.iut.sciencequest.model.dto
 import kotlinx.serialization.Serializable
 
 @Serializable
-data class ThematiqueDTO (
+class ThematiqueDTO (
     val id: Int,
     val libelle: String
 )
\ No newline at end of file