diff --git a/SpringBootProject/src/main/java/fr/iut/sciencequest/sae/repositories/ThematiqueRepository.java b/SpringBootProject/src/main/java/fr/iut/sciencequest/sae/repositories/ThematiqueRepository.java
index d57aec4..2fcc101 100644
--- a/SpringBootProject/src/main/java/fr/iut/sciencequest/sae/repositories/ThematiqueRepository.java
+++ b/SpringBootProject/src/main/java/fr/iut/sciencequest/sae/repositories/ThematiqueRepository.java
@@ -6,4 +6,6 @@ import org.springframework.stereotype.Repository;
 
 
 @Repository
-public interface ThematiqueRepository extends CrudRepository<Thematique, Integer> {}
+public interface ThematiqueRepository extends CrudRepository<Thematique, Integer> {
+    public boolean existsByLibelle(String libelle);
+}