diff --git a/back_end/src/main/java/hackathon/FrisbYEE/rest/ActiviteResource.java b/back_end/src/main/java/hackathon/FrisbYEE/rest/ActiviteResource.java
index 73a7930..b758823 100644
--- a/back_end/src/main/java/hackathon/FrisbYEE/rest/ActiviteResource.java
+++ b/back_end/src/main/java/hackathon/FrisbYEE/rest/ActiviteResource.java
@@ -20,6 +20,7 @@ import org.springframework.web.bind.annotation.*;
 import java.util.List;
 import java.util.stream.Collectors;
 
+@CrossOrigin(origins = "http://localhost:3000")
 @Controller
 @RequestMapping("/activite")
 
diff --git a/back_end/src/main/java/hackathon/FrisbYEE/rest/AthleteResource.java b/back_end/src/main/java/hackathon/FrisbYEE/rest/AthleteResource.java
index acbb466..f539950 100644
--- a/back_end/src/main/java/hackathon/FrisbYEE/rest/AthleteResource.java
+++ b/back_end/src/main/java/hackathon/FrisbYEE/rest/AthleteResource.java
@@ -32,6 +32,7 @@ import io.swagger.v3.oas.annotations.media.Schema;
 import io.swagger.v3.oas.annotations.responses.ApiResponse;
 import io.swagger.v3.oas.annotations.responses.ApiResponses;
 
+
 @Controller
 @RequestMapping("/athlete")
 public class AthleteResource {
diff --git a/back_end/src/main/java/hackathon/FrisbYEE/rest/CoachResource.java b/back_end/src/main/java/hackathon/FrisbYEE/rest/CoachResource.java
index 77d41e3..7d7d1fa 100644
--- a/back_end/src/main/java/hackathon/FrisbYEE/rest/CoachResource.java
+++ b/back_end/src/main/java/hackathon/FrisbYEE/rest/CoachResource.java
@@ -14,6 +14,7 @@ import org.springframework.web.server.ResponseStatusException;
 import java.util.ArrayList;
 import java.util.List;
 
+@CrossOrigin(origins = "http://localhost:3000")
 @RestController
 @RequestMapping("/coach")
 public class CoachResource {
diff --git a/back_end/src/main/java/hackathon/FrisbYEE/rest/SessionResource.java b/back_end/src/main/java/hackathon/FrisbYEE/rest/SessionResource.java
index d0aa950..5ea60dd 100644
--- a/back_end/src/main/java/hackathon/FrisbYEE/rest/SessionResource.java
+++ b/back_end/src/main/java/hackathon/FrisbYEE/rest/SessionResource.java
@@ -20,6 +20,7 @@ import org.springframework.web.server.ResponseStatusException;
 import java.util.ArrayList;
 import java.util.List;
 
+@CrossOrigin(origins = "http://localhost:3000")
 @Controller
 @RequestMapping("/session")