diff --git a/src/simsopt/objectives/least_squares.py b/src/simsopt/objectives/least_squares.py
index 16e146f0f..074a979ac 100644
--- a/src/simsopt/objectives/least_squares.py
+++ b/src/simsopt/objectives/least_squares.py
@@ -133,7 +133,9 @@ def from_tuples(cls,
                 each tuple (the specified order matters).
         """
         funcs_in, goals, weights = zip(*tuples)
-        return cls(goals, weights, funcs_in=funcs_in, fail=fail)
+        goal_array =  np.concatenate([np.ravel(x) for x in goals])
+        weigth_array =  np.concatenate([np.ravel(x) for x in weights])
+        return cls(goal_array, weigth_array, funcs_in=funcs_in, fail=fail)
 
     def unweighted_residuals(self, x=None, *args, **kwargs):
         """