diff --git a/src/api/users.py b/src/api/users.py
index 93a5fe9..92dc6d0 100644
--- a/src/api/users.py
+++ b/src/api/users.py
@@ -99,6 +99,10 @@ async def register(reg_data: Annotated[RegisterData, Body()]) -> UserData:
     if user is not None:
         raise HTTPException(status_code=status.HTTP_409_CONFLICT, detail="Username already taken")
 
+    user = await User.find_one(User.email == reg_data.email)
+    if user is not None:
+        raise HTTPException(status_code=status.HTTP_409_CONFLICT, detail="Email already taken")
+
     user = await reg_data.create_user()
     return UserData.from_user(user)