diff --git a/Modules/Filtering/FFT/include/itkHalfHermitianToRealInverseFFTImageFilter.hxx b/Modules/Filtering/FFT/include/itkHalfHermitianToRealInverseFFTImageFilter.hxx
index f089d0c09ef..da1b4010017 100644
--- a/Modules/Filtering/FFT/include/itkHalfHermitianToRealInverseFFTImageFilter.hxx
+++ b/Modules/Filtering/FFT/include/itkHalfHermitianToRealInverseFFTImageFilter.hxx
@@ -18,6 +18,8 @@
 #ifndef itkHalfHermitianToRealInverseFFTImageFilter_hxx
 #define itkHalfHermitianToRealInverseFFTImageFilter_hxx
 
+#include "itkHalfHermitianToRealInverseFFTImageFilter.h"
+
 namespace itk
 {
 
diff --git a/Modules/Filtering/FFT/include/itkRealToHalfHermitianForwardFFTImageFilter.hxx b/Modules/Filtering/FFT/include/itkRealToHalfHermitianForwardFFTImageFilter.hxx
index ab2b64451ef..79ae6759291 100644
--- a/Modules/Filtering/FFT/include/itkRealToHalfHermitianForwardFFTImageFilter.hxx
+++ b/Modules/Filtering/FFT/include/itkRealToHalfHermitianForwardFFTImageFilter.hxx
@@ -18,6 +18,8 @@
 #ifndef itkRealToHalfHermitianForwardFFTImageFilter_hxx
 #define itkRealToHalfHermitianForwardFFTImageFilter_hxx
 
+#include "itkRealToHalfHermitianForwardFFTImageFilter.h"
+
 namespace itk
 {
 
diff --git a/Modules/Filtering/FFT/test/itkComplexToComplexFFTImageFilterTest.cxx b/Modules/Filtering/FFT/test/itkComplexToComplexFFTImageFilterTest.cxx
index fb7d69d8440..a3b006d7aed 100644
--- a/Modules/Filtering/FFT/test/itkComplexToComplexFFTImageFilterTest.cxx
+++ b/Modules/Filtering/FFT/test/itkComplexToComplexFFTImageFilterTest.cxx
@@ -58,11 +58,10 @@ registerFactories()
   itk::ObjectFactoryBase::RegisterInternalFactoryOnce<itk::FFTWComplexToComplexFFTImageFilterFactory>();
   itk::ObjectFactoryBase::RegisterInternalFactoryOnce<itk::FFTWForwardFFTImageFilterFactory>();
   itk::ObjectFactoryBase::RegisterInternalFactoryOnce<itk::FFTWInverseFFTImageFilterFactory>();
-#  else
-  itk::ObjectFactoryBase::RegisterInternalFactoryOnce<itk::VnlComplexToComplex1DFFTImageFilterFactory>();
-  itk::ObjectFactoryBase::RegisterInternalFactoryOnce<itk::VnlForwardFFTImageFilter>();
-  itk::ObjectFactoryBase::RegisterInternalFactoryOnce<itk::VnlInverseFFTImageFilter>();
 #  endif
+  itk::ObjectFactoryBase::RegisterInternalFactoryOnce<itk::VnlComplexToComplexFFTImageFilterFactory>();
+  itk::ObjectFactoryBase::RegisterInternalFactoryOnce<itk::VnlForwardFFTImageFilterFactory>();
+  itk::ObjectFactoryBase::RegisterInternalFactoryOnce<itk::VnlInverseFFTImageFilterFactory>();
 #endif
 }