diff --git a/LoopStructural/interpolators/_geological_interpolator.py b/LoopStructural/interpolators/_geological_interpolator.py
index 0368698c..c4fd6d23 100644
--- a/LoopStructural/interpolators/_geological_interpolator.py
+++ b/LoopStructural/interpolators/_geological_interpolator.py
@@ -154,16 +154,22 @@ def set_normal_constraints(self, points: np.ndarray):
         ----------
         points : np.ndarray
             array containing the value constraints usually 7-8 columns.
-            X,Y,Z,nx,ny,nz,weight
+            X,Y,Z,nx,ny,nz,(weight, default : 1 for each row)
 
         Returns
         -------
 
+        Notes
+        -------
+        If no weights are provided, w = 1 is assigned to each normal constraint.
+
         """
         if points.shape[1] == self.dimensions * 2:
             points = np.hstack([points, np.ones((points.shape[0], 1))])
+            logger.warning(f"No weight provided for normal constraints, all weights are set to 1")
+            raise Warning
         if points.shape[1] < self.dimensions * 2 + 1:
-            raise ValueError("Nonrmal constraints must at least have X,Y,Z,nx,ny,nz")
+            raise ValueError("Normal constraints must at least have X,Y,Z,nx,ny,nz")
         self.n_n = points.shape[0]
         self.data["normal"] = points
         self.up_to_date = False