diff --git a/src/main/java/fr/plil/sio/web/mvc/Role.java b/src/main/java/fr/plil/sio/web/mvc/Role.java
index 648b32b..fe7c79b 100644
--- a/src/main/java/fr/plil/sio/web/mvc/Role.java
+++ b/src/main/java/fr/plil/sio/web/mvc/Role.java
@@ -1,5 +1,6 @@
 package fr.plil.sio.web.mvc;
 
+import com.fasterxml.jackson.annotation.JsonBackReference;
 import org.springframework.security.core.GrantedAuthority;
 
 import javax.persistence.*;
@@ -19,6 +20,7 @@ public class Role implements GrantedAuthority {
     private String name;
 
     @ManyToMany
+    @JsonBackReference
     @JoinTable(
             name = "USER_ROLE_T",
             joinColumns = @JoinColumn(name = "ROLE_ID", referencedColumnName = "ROLE_ID"),
diff --git a/src/main/java/fr/plil/sio/web/mvc/User.java b/src/main/java/fr/plil/sio/web/mvc/User.java
index b357b23..75ec6a9 100644
--- a/src/main/java/fr/plil/sio/web/mvc/User.java
+++ b/src/main/java/fr/plil/sio/web/mvc/User.java
@@ -1,6 +1,7 @@
 package fr.plil.sio.web.mvc;
 
 
+import com.fasterxml.jackson.annotation.JsonManagedReference;
 import org.springframework.security.core.GrantedAuthority;
 import org.springframework.security.core.userdetails.UserDetails;
 
@@ -25,6 +26,7 @@ public class User implements UserDetails {
     private String password;
 
     @ManyToMany(mappedBy = "users", fetch = FetchType.EAGER)
+    @JsonManagedReference
     private Set<Role> roles = new TreeSet<>();
 
     public Set<Role> getRoles() {
diff --git a/src/main/java/fr/plil/sio/web/mvc/UserRestController.java b/src/main/java/fr/plil/sio/web/mvc/UserRestController.java
index a8085cb..a646a59 100644
--- a/src/main/java/fr/plil/sio/web/mvc/UserRestController.java
+++ b/src/main/java/fr/plil/sio/web/mvc/UserRestController.java
@@ -1,5 +1,6 @@
 package fr.plil.sio.web.mvc;
 
+import org.springframework.web.bind.annotation.PathVariable;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RequestMethod;
 import org.springframework.web.bind.annotation.RestController;
@@ -13,8 +14,13 @@ public class UserRestController {
     @Resource
     private UserService userService;
 
-    @RequestMapping(value = "/users/", method = RequestMethod.GET)
+    @RequestMapping(value = "/api/users/", method = RequestMethod.GET)
     public List<User> listUsers() {
         return userService.findAll();
     }
+
+    @RequestMapping(value = "/api/users/{username}/", method = RequestMethod.GET)
+    public User listUsers(@PathVariable String username) {
+        return userService.findByUsername(username);
+    }
 }
\ No newline at end of file
--
libgit2 0.21.2