diff --git a/Modules/Filtering/FFT/include/itkComplexToComplex1DFFTImageFilter.h b/Modules/Filtering/FFT/include/itkComplexToComplex1DFFTImageFilter.h
index 70a3b118e90..b4ad28ecc2d 100644
--- a/Modules/Filtering/FFT/include/itkComplexToComplex1DFFTImageFilter.h
+++ b/Modules/Filtering/FFT/include/itkComplexToComplex1DFFTImageFilter.h
@@ -79,7 +79,7 @@ class ITK_TEMPLATE_EXPORT ComplexToComplex1DFFTImageFilter : public ImageToImage
   itkGetConstMacro(TransformDirection, TransformDirectionType);
 
   /** Get the direction in which the filter is to be applied. */
-  itkGetMacro(Direction, unsigned int);
+  itkGetConstMacro(Direction, unsigned int);
 
   /** Set the direction in which the filter is to be applied. */
   itkSetClampMacro(Direction, unsigned int, 0, InputImageType::ImageDimension - 1);
diff --git a/Modules/Filtering/FFT/include/itkForward1DFFTImageFilter.h b/Modules/Filtering/FFT/include/itkForward1DFFTImageFilter.h
index 39b95cbf61f..a14550f8ff5 100644
--- a/Modules/Filtering/FFT/include/itkForward1DFFTImageFilter.h
+++ b/Modules/Filtering/FFT/include/itkForward1DFFTImageFilter.h
@@ -62,7 +62,7 @@ class ITK_TEMPLATE_EXPORT Forward1DFFTImageFilter : public ImageToImageFilter<TI
   New();
 
   /** Get the direction in which the filter is to be applied. */
-  itkGetMacro(Direction, unsigned int);
+  itkGetConstMacro(Direction, unsigned int);
 
   /** Set the direction in which the filter is to be applied. */
   itkSetClampMacro(Direction, unsigned int, 0, InputImageType::ImageDimension - 1);
diff --git a/Modules/Filtering/FFT/include/itkInverse1DFFTImageFilter.h b/Modules/Filtering/FFT/include/itkInverse1DFFTImageFilter.h
index 53f1aea6cd6..6bfe492710a 100644
--- a/Modules/Filtering/FFT/include/itkInverse1DFFTImageFilter.h
+++ b/Modules/Filtering/FFT/include/itkInverse1DFFTImageFilter.h
@@ -63,7 +63,7 @@ class ITK_TEMPLATE_EXPORT Inverse1DFFTImageFilter : public ImageToImageFilter<TI
   New(void);
 
   /** Get the direction in which the filter is to be applied. */
-  itkGetMacro(Direction, unsigned int);
+  itkGetConstMacro(Direction, unsigned int);
 
   /** Set the direction in which the filter is to be applied. */
   itkSetClampMacro(Direction, unsigned int, 0, InputImageType::ImageDimension - 1);