diff --git a/fsl/data/image.py b/fsl/data/image.py
index 6806d9518e8343c2970724d344d4d50ac5b73921..c80158cb6afe9b677a20525ab12f3203fb439aec 100644
--- a/fsl/data/image.py
+++ b/fsl/data/image.py
@@ -819,7 +819,7 @@ class Image(Nifti):
             else:
                 name = 'Nibabel image'
 
-        Nifti.__init__(self, nibImage.get_header())
+        Nifti.__init__(self, nibImage.header)
 
         self.name                = name
         self.__lName             = '{}_{}'.format(id(self), self.name)
diff --git a/fsl/data/imagewrapper.py b/fsl/data/imagewrapper.py
index 81658f594817ad90b3f4f9c7fd7fecbd9949e0a2..add862f5eb9ed4fa2ef6be1b8eb6a34fb61d93ee 100644
--- a/fsl/data/imagewrapper.py
+++ b/fsl/data/imagewrapper.py
@@ -314,7 +314,7 @@ class ImageWrapper(notifier.Notifier):
         # header (which may or may not contain
         # useful values).
         low, high = self.__range
-        hdr       = self.__image.get_header()
+        hdr       = self.__image.header
 
         if low  is None: low  = float(hdr['cal_min'])
         if high is None: high = float(hdr['cal_max'])