diff --git a/mittens/spatial.py b/mittens/spatial.py
index cedefdc..2b09f53 100644
--- a/mittens/spatial.py
+++ b/mittens/spatial.py
@@ -16,7 +16,7 @@ def _set_real_affine(self, affine_img):
         else:
             self.real_affine = np.array([])
 
-    def save_nifti(self, data, fname, real_affine=False, is_full_image=False):
+    def save_nifti(self, data, fname, real_affine=True, is_full_image=False):
         """
         Writes a value for each node into a 3D volume.