diff --git a/SimPEG/Maps.py b/SimPEG/Maps.py
index 9cd067b3..5b4782ac 100644
--- a/SimPEG/Maps.py
+++ b/SimPEG/Maps.py
@@ -991,4 +991,11 @@ class SplineMap(IdentityMap):
                     fderiv = (flinesa-flinesb)/(2*dy)                                
                     g3[:,i] = Utils.sdiag(alpha*(sig2-sig1)/(1.+(alpha*f)**2)/np.pi)*fderiv
         else :
-            raise(Exception("Not Implemented for Y and Z, your turn :)"))
\ No newline at end of file
+            raise(Exception("Not Implemented for Y and Z, your turn :)"))
+        return sp.csr_matrix(np.c_[g1,g2,g3])  
+
+
+
+
+
+            
\ No newline at end of file