diff --git a/SpringBootProject/src/main/java/fr/iut/sciencequest/sae/controllers/IndiceController.java b/SpringBootProject/src/main/java/fr/iut/sciencequest/sae/controllers/IndiceController.java
index b1b88f6..63f97fb 100644
--- a/SpringBootProject/src/main/java/fr/iut/sciencequest/sae/controllers/IndiceController.java
+++ b/SpringBootProject/src/main/java/fr/iut/sciencequest/sae/controllers/IndiceController.java
@@ -19,13 +19,15 @@ import org.springframework.web.bind.annotation.*;
 @RequestMapping("/api/v1/indices")
 public class IndiceController extends Controller {
     private final IndiceService indiceService;
+    private final IndiceRepository indiceRepository;
     private final ModelMapper modelMapper;
 
     @PatchMapping(value="/{id}", consumes = MediaType.APPLICATION_JSON_VALUE, produces = MediaType.APPLICATION_JSON_VALUE)
     @ResponseStatus(HttpStatus.OK)
-    public IndiceSimpleWithScientifiquesIdDTO patchIndice(@PathVariable("id") int id, @RequestBody @Valid IndiceWithoutIdAndScientifiqueIdOnlyForPatchDTO indiceInput) throws JsonMappingException {
-        Indice indice = this.modelMapper.map(indiceInput, Indice.class);
-        indice.setId(id);
+    public IndiceSimpleWithScientifiquesIdDTO patchIndice(@PathVariable("id") int id, @RequestBody @Valid IndiceWithoutIdAndScientifiqueIdOnlyForPatchDTO indiceInput) throws IllegalAccessException {
+        Indice indicePartial = this.modelMapper.map(indiceInput, Indice.class);
+        Indice indice = this.indiceRepository.getById(id);
+        indice = this.indiceService.patch(indicePartial, indice);
 
         return this.modelMapper.map(this.indiceService.update(indice), IndiceSimpleWithScientifiquesIdDTO.class);
     }
diff --git a/SpringBootProject/src/main/java/fr/iut/sciencequest/sae/controllers/ThematiqueController.java b/SpringBootProject/src/main/java/fr/iut/sciencequest/sae/controllers/ThematiqueController.java
index 1e1ce85..2b8fab0 100644
--- a/SpringBootProject/src/main/java/fr/iut/sciencequest/sae/controllers/ThematiqueController.java
+++ b/SpringBootProject/src/main/java/fr/iut/sciencequest/sae/controllers/ThematiqueController.java
@@ -5,12 +5,15 @@ import fr.iut.sciencequest.sae.assemblers.IndiceModelAssembler;
 import fr.iut.sciencequest.sae.assemblers.ThematiqueModelAssembler;
 import fr.iut.sciencequest.sae.assemblers.ThematiqueSimpleModelAssembler;
 import fr.iut.sciencequest.sae.dto.thematique.ThematiqueDTO;
+import fr.iut.sciencequest.sae.dto.thematique.ThematiqueLibelleOnlyDTO;
 import fr.iut.sciencequest.sae.dto.thematique.ThematiqueSimpleDTO;
 import fr.iut.sciencequest.sae.entities.Difficulte;
 import fr.iut.sciencequest.sae.entities.Thematique;
 import fr.iut.sciencequest.sae.services.interfaces.IThematiqueService;
+import jakarta.annotation.Nullable;
 import jakarta.validation.Valid;
 import lombok.AllArgsConstructor;
+import org.modelmapper.ModelMapper;
 import org.springframework.data.domain.Page;
 import org.springframework.data.domain.Pageable;
 import org.springframework.data.web.PageableDefault;
@@ -32,6 +35,7 @@ public class ThematiqueController extends Controller {
     private final ThematiqueSimpleModelAssembler thematiqueSimpleModelAssembler;
     @SuppressWarnings("SpringJavaInjectionPointsAutowiringInspection")
     private final PagedResourcesAssembler<Thematique> pagedResourcesAssembler;
+    private final ModelMapper modelMapper;
 
     @GetMapping(produces = MediaType.APPLICATION_JSON_VALUE)
     @ResponseStatus(HttpStatus.OK)
@@ -40,17 +44,17 @@ public class ThematiqueController extends Controller {
     }
 
     //TODO : gestion des erreurs remontées par @Valid
-    //TODO : ajouter liens hateos
     @PostMapping(produces = MediaType.APPLICATION_JSON_VALUE, consumes = MediaType.APPLICATION_JSON_VALUE)
     @ResponseStatus(HttpStatus.CREATED)
-    public ThematiqueDTO createThematique(@Valid @RequestBody Thematique thematique) {
-        return thematiqueModelAssembler.toModel(this.thematiqueService.create(thematique));
+    public ThematiqueSimpleDTO createThematique(@Valid @RequestBody ThematiqueLibelleOnlyDTO thematique) {
+        return thematiqueSimpleModelAssembler.toModel(this.thematiqueService.create(this.modelMapper.map(thematique, Thematique.class)));
     }
 
     @PatchMapping(path = "/{id}", produces = MediaType.APPLICATION_JSON_VALUE, consumes = MediaType.APPLICATION_JSON_VALUE)
     @ResponseStatus(HttpStatus.CREATED)
-    public ThematiqueDTO updateThematique(@PathVariable("id") int id, @Valid @RequestBody Thematique thematique) {
+    public ThematiqueSimpleDTO updateThematique(@PathVariable("id") int id, @Valid @RequestBody ThematiqueLibelleOnlyDTO partialThematique) {
+        Thematique thematique = this.modelMapper.map(partialThematique, Thematique.class);
         thematique.setId(id);
-        return thematiqueModelAssembler.toModel(this.thematiqueService.update(thematique));
+        return thematiqueSimpleModelAssembler.toModel(this.thematiqueService.update(thematique));
     }
 }
diff --git a/SpringBootProject/src/main/java/fr/iut/sciencequest/sae/dto/thematique/ThematiqueLibelleOnlyDTO.java b/SpringBootProject/src/main/java/fr/iut/sciencequest/sae/dto/thematique/ThematiqueLibelleOnlyDTO.java
new file mode 100644
index 0000000..78647db
--- /dev/null
+++ b/SpringBootProject/src/main/java/fr/iut/sciencequest/sae/dto/thematique/ThematiqueLibelleOnlyDTO.java
@@ -0,0 +1,17 @@
+package fr.iut.sciencequest.sae.dto.thematique;
+
+import jakarta.validation.constraints.NotBlank;
+import jakarta.validation.constraints.NotNull;
+import lombok.*;
+import org.springframework.hateoas.RepresentationModel;
+
+
+@Data
+@Builder
+@NoArgsConstructor
+@AllArgsConstructor
+@EqualsAndHashCode(callSuper = false)
+public class ThematiqueLibelleOnlyDTO extends RepresentationModel<ThematiqueLibelleOnlyDTO> {
+    @NotBlank
+    private String libelle;
+}
diff --git a/SpringBootProject/src/main/java/fr/iut/sciencequest/sae/services/ThematiqueService.java b/SpringBootProject/src/main/java/fr/iut/sciencequest/sae/services/ThematiqueService.java
index 1df8fd8..889f78d 100644
--- a/SpringBootProject/src/main/java/fr/iut/sciencequest/sae/services/ThematiqueService.java
+++ b/SpringBootProject/src/main/java/fr/iut/sciencequest/sae/services/ThematiqueService.java
@@ -32,7 +32,7 @@ public class ThematiqueService implements IThematiqueService {
 
     @Override
     public Thematique create(Thematique thematique){
-        if(this.thematiqueRepository.existsById(thematique.getId())){
+        if(thematique.getId() != null && this.thematiqueRepository.existsById(thematique.getId())){
             throw new DuplicatedIdException();
         }
         this.checkFieldsConstraints(thematique);