diff --git a/unsupported/Eigen/FFT b/unsupported/Eigen/FFT
index cb99bd281..c8c311a60 100644
--- a/unsupported/Eigen/FFT
+++ b/unsupported/Eigen/FFT
@@ -131,8 +131,6 @@ protected:
   const T_SrcMat & m_src;
   T_FftIfc & m_ifc;
   Index m_nfft;
-private:
-  fft_fwd_proxy& operator=(const fft_fwd_proxy&);
 };
 
 template<typename T_SrcMat,typename T_FftIfc> 
@@ -151,8 +149,6 @@ protected:
   const T_SrcMat & m_src;
   T_FftIfc & m_ifc;
   Index m_nfft;
-private:
-  fft_inv_proxy& operator=(const fft_inv_proxy&);
 };