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diff --git a/gr-digital/lib/digital_kurtotic_equalizer_cc.h b/gr-digital/lib/digital_kurtotic_equalizer_cc.h
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--- a/gr-digital/lib/digital_kurtotic_equalizer_cc.h
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-/* -*- c++ -*- */
-/*
- * Copyright 2011 Free Software Foundation, Inc.
- * 
- * This file is part of GNU Radio
- * 
- * GNU Radio is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 3, or (at your option)
- * any later version.
- * 
- * GNU Radio is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- * 
- * You should have received a copy of the GNU General Public License
- * along with GNU Radio; see the file COPYING.  If not, write to
- * the Free Software Foundation, Inc., 51 Franklin Street,
- * Boston, MA 02110-1301, USA.
- */
-
-#ifndef INCLUDED_DIGITAL_KURTOTIC_EQUALIZER_CC_H
-#define	INCLUDED_DIGITAL_KURTOTIC_EQUALIZER_CC_H
-
-#include <gr_adaptive_fir_ccc.h>
-#include <gr_math.h>
-#include <iostream>
-
-class digital_kurtotic_equalizer_cc;
-typedef boost::shared_ptr<digital_kurtotic_equalizer_cc> digital_kurtotic_equalizer_cc_sptr;
-
-digital_kurtotic_equalizer_cc_sptr 
-digital_make_kurtotic_equalizer_cc(int num_taps, float mu);
-
-/*!
- * \brief Implements a kurtosis-based adaptive equalizer on complex stream
- * \ingroup eq_blk
- *
- * Y. Guo, J. Zhao, Y. Sun, "Sign kurtosis maximization based blind
- * equalization algorithm," IEEE Conf. on Control, Automation,
- * Robotics and Vision, Vol. 3, Dec. 2004, pp. 2052 - 2057.
- */
-class digital_kurtotic_equalizer_cc : public gr_adaptive_fir_ccc
-{
-private:
-  float d_mu;
-  float d_p, d_m;
-  gr_complex d_q, d_u;
-  float d_alpha_p, d_alpha_q, d_alpha_m;
-  
-  friend digital_kurtotic_equalizer_cc_sptr digital_make_kurtotic_equalizer_cc(int num_taps,
-									       float mu);
-  digital_kurtotic_equalizer_cc(int num_taps, float mu);
-
-  gr_complex sign(gr_complex x)
-  {
-    float re = (float)(x.real() >= 0.0f);
-    float im = (float)(x.imag() >= 0.0f);
-    return gr_complex(re, im);
-  }
-
-protected:
-
-  virtual gr_complex error(const gr_complex &out) 
-  {
-
-    // p = E[|z|^2]
-    // q = E[z^2]
-    // m = E[|z|^4]
-    // u = E[kurtosis(z)]
-
-    float nrm = norm(out);
-    gr_complex cnj = conj(out);
-    float epsilon_f = 1e-12;
-    gr_complex epsilon_c = gr_complex(1e-12, 1e-12);
-
-    
-    d_p = (1-d_alpha_p)*d_p + (d_alpha_p)*nrm + epsilon_f;
-    d_q = (1-d_alpha_q)*d_q + (d_alpha_q)*out*out + epsilon_c;
-    d_m = (1-d_alpha_m)*d_m + (d_alpha_m)*nrm*nrm + epsilon_f;
-    d_u = d_m - 2.0f*(d_p*d_p) - d_q*d_q;
-
-    gr_complex F = (1.0f / (d_p*d_p*d_p)) *
-      (sign(d_u) * (nrm*cnj - 2.0f*d_p*cnj - conj(d_q)*out) -
-       abs(d_u)*cnj);
-
-    //std::cout << "out: " << out << "   p: " << d_p << "   q: " << d_q;
-    //std::cout << "   m: " << d_m << "   u: " << d_u << std::endl;
-    //std::cout << "error: " << F << std::endl;
-    
-    float re = gr_clip(F.real(), 1.0);
-    float im = gr_clip(F.imag(), 1.0);
-    return gr_complex(re, im);
-  }
-
-  virtual void update_tap(gr_complex &tap, const gr_complex &in) 
-  {
-    tap += d_mu*in*d_error;
-  }
-  
-public:
-  void set_gain(float mu) 
-  {
-    if(mu < 0)
-      throw std::out_of_range("digital_kurtotic_equalizer::set_gain: Gain value must be >= 0");
-    d_mu = mu;
-  }
-};
-
-#endif