diff --git a/src/helpers/account_helper.rs b/src/helpers/account_helper.rs
index 2eab8b6..dddb56e 100644
--- a/src/helpers/account_helper.rs
+++ b/src/helpers/account_helper.rs
@@ -300,10 +300,11 @@ pub fn export(user_id: &UserID) -> ResultBoxError<AccountExport> {
 }
 
 /// Delete a user's account
-pub fn delete(_user_id: &UserID) -> ResultBoxError {
+pub fn delete(user_id: &UserID) -> ResultBoxError {
     // TODO : close all websockets of user
 
-    // TODO : Delete all group membership
+    // Delete all group membership
+    groups_helper::delete_all_user_groups(user_id)?;
 
     // TODO : continue work here
 
diff --git a/src/helpers/groups_helper.rs b/src/helpers/groups_helper.rs
index 5a2f057..731053f 100644
--- a/src/helpers/groups_helper.rs
+++ b/src/helpers/groups_helper.rs
@@ -488,6 +488,19 @@ pub fn delete(group_id: &GroupID) -> ResultBoxError {
         .exec()
 }
 
+/// Delete all the groups a user belongs to
+pub fn delete_all_user_groups(user_id: &UserID) -> ResultBoxError {
+    for group_id in &get_list_user(user_id, false)? {
+        if is_last_admin(group_id, user_id)? {
+            delete(group_id)?;
+        } else {
+            delete_member(group_id, user_id)?;
+        }
+    }
+
+    Ok(())
+}
+
 
 /// Turn a database entry into a group struct
 fn db_to_group(row: &database::RowResult) -> ResultBoxError<Group> {