diff --git a/Modules/Core/Common/include/itkImageScanlineConstIterator.h b/Modules/Core/Common/include/itkImageScanlineConstIterator.h
index c27ccdc3033..aa3395e0841 100644
--- a/Modules/Core/Common/include/itkImageScanlineConstIterator.h
+++ b/Modules/Core/Common/include/itkImageScanlineConstIterator.h
@@ -102,7 +102,7 @@ class ITK_TEMPLATE_EXPORT ImageScanlineConstIterator : public ImageConstIterator
 
   /** Constructor establishes an iterator to walk a particular image and a
    * particular region of that image. */
-  ImageScanlineConstIterator(const ImageType * ptr, const RegionType & region)
+  ImageScanlineConstIterator(const TImage * ptr, const RegionType & region)
     : ImageConstIterator<TImage>(ptr, region)
   {
     m_SpanBeginOffset = this->m_BeginOffset;
diff --git a/Modules/Core/Common/include/itkImageScanlineIterator.h b/Modules/Core/Common/include/itkImageScanlineIterator.h
index d2e3da68c3a..fcd36c65225 100644
--- a/Modules/Core/Common/include/itkImageScanlineIterator.h
+++ b/Modules/Core/Common/include/itkImageScanlineIterator.h
@@ -63,7 +63,7 @@ class ITK_TEMPLATE_EXPORT ImageScanlineIterator : public ImageScanlineConstItera
 
   /** Constructor establishes an iterator to walk a particular image and a
    * particular region of that image. */
-  ImageScanlineIterator(ImageType * ptr, const RegionType & region);
+  ImageScanlineIterator(TImage * ptr, const RegionType & region);
 
   /** Constructor that can be used to cast from an ImageIterator to an
    * ImageScanlineIterator. Many routines return an ImageIterator but for a
diff --git a/Modules/Core/Common/include/itkImageScanlineIterator.hxx b/Modules/Core/Common/include/itkImageScanlineIterator.hxx
index b2f30088a42..7149de3c52d 100644
--- a/Modules/Core/Common/include/itkImageScanlineIterator.hxx
+++ b/Modules/Core/Common/include/itkImageScanlineIterator.hxx
@@ -22,7 +22,7 @@
 namespace itk
 {
 template <typename TImage>
-ImageScanlineIterator<TImage>::ImageScanlineIterator(ImageType * ptr, const RegionType & region)
+ImageScanlineIterator<TImage>::ImageScanlineIterator(TImage * ptr, const RegionType & region)
   : ImageScanlineConstIterator<TImage>(ptr, region)
 {}