diff --git a/src/algorithms/libs/conjugate_cc.cc b/src/algorithms/libs/conjugate_cc.cc
index 60063473a..c216d3ece 100644
--- a/src/algorithms/libs/conjugate_cc.cc
+++ b/src/algorithms/libs/conjugate_cc.cc
@@ -1,3 +1,33 @@
+/*!
+ * \file conjugate_cc.cc
+ * \brief Conjugate a stream of gr_complex
+ * \author Carles Fernandez Prades, cfernandez(at)cttc.es
+ *
+ * -------------------------------------------------------------------------
+ *
+ * Copyright (C) 2010-2017  (see AUTHORS file for a list of contributors)
+ *
+ * GNSS-SDR is a software defined Global Navigation
+ *          Satellite Systems receiver
+ *
+ * This file is part of GNSS-SDR.
+ *
+ * GNSS-SDR 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 of the License, or
+ * (at your option) any later version.
+ *
+ * GNSS-SDR 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 GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * -------------------------------------------------------------------------
+ */
+
 #include "conjugate_cc.h"
 #include <gnuradio/io_signature.h>
 #include <volk/volk.h>
diff --git a/src/algorithms/libs/conjugate_cc.h b/src/algorithms/libs/conjugate_cc.h
index 556f79c6d..55466a0d1 100644
--- a/src/algorithms/libs/conjugate_cc.h
+++ b/src/algorithms/libs/conjugate_cc.h
@@ -1,6 +1,6 @@
 /*!
  * \file conjugate_cc.h
- * \brief Conjugate
+ * \brief Conjugate a stream of gr_complex
  * \author Carles Fernandez Prades, cfernandez(at)cttc.es
  *
  * -------------------------------------------------------------------------
diff --git a/src/algorithms/libs/conjugate_ic.cc b/src/algorithms/libs/conjugate_ic.cc
index b1f85e39f..29fa1744e 100644
--- a/src/algorithms/libs/conjugate_ic.cc
+++ b/src/algorithms/libs/conjugate_ic.cc
@@ -1,3 +1,33 @@
+/*!
+ * \file conjugate_ic.cc
+ * \brief Conjugate a stream of lv_8sc_t ( std::complex<char> )
+ * \author Carles Fernandez Prades, cfernandez(at)cttc.es
+ *
+ * -------------------------------------------------------------------------
+ *
+ * Copyright (C) 2010-2017  (see AUTHORS file for a list of contributors)
+ *
+ * GNSS-SDR is a software defined Global Navigation
+ *          Satellite Systems receiver
+ *
+ * This file is part of GNSS-SDR.
+ *
+ * GNSS-SDR 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 of the License, or
+ * (at your option) any later version.
+ *
+ * GNSS-SDR 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 GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * -------------------------------------------------------------------------
+ */
+
 #include "conjugate_ic.h"
 #include <gnuradio/io_signature.h>
 #include <volk_gnsssdr/volk_gnsssdr.h>
diff --git a/src/algorithms/libs/conjugate_ic.h b/src/algorithms/libs/conjugate_ic.h
index 38eb21a35..efec8e2f8 100644
--- a/src/algorithms/libs/conjugate_ic.h
+++ b/src/algorithms/libs/conjugate_ic.h
@@ -1,6 +1,6 @@
 /*!
  * \file conjugate_ic.h
- * \brief Adapts a std::complex<short> stream into two float streams
+ * \brief Conjugate a stream of lv_8sc_t ( std::complex<char> )
  * \author Carles Fernandez Prades, cfernandez(at)cttc.es
  *
  * -------------------------------------------------------------------------
diff --git a/src/algorithms/libs/conjugate_sc.cc b/src/algorithms/libs/conjugate_sc.cc
index ac22d7723..2ea5aeef7 100644
--- a/src/algorithms/libs/conjugate_sc.cc
+++ b/src/algorithms/libs/conjugate_sc.cc
@@ -1,3 +1,33 @@
+/*!
+ * \file conjugate_sc.h
+ * \brief Conjugate a stream of lv_16sc_t ( std::complex<short> )
+ * \author Carles Fernandez Prades, cfernandez(at)cttc.es
+ *
+ * -------------------------------------------------------------------------
+ *
+ * Copyright (C) 2010-2017  (see AUTHORS file for a list of contributors)
+ *
+ * GNSS-SDR is a software defined Global Navigation
+ *          Satellite Systems receiver
+ *
+ * This file is part of GNSS-SDR.
+ *
+ * GNSS-SDR 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 of the License, or
+ * (at your option) any later version.
+ *
+ * GNSS-SDR 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 GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * -------------------------------------------------------------------------
+ */
+
 #include "conjugate_sc.h"
 #include <gnuradio/io_signature.h>
 #include <volk_gnsssdr/volk_gnsssdr.h>
diff --git a/src/algorithms/libs/conjugate_sc.h b/src/algorithms/libs/conjugate_sc.h
index b26a66c79..3b424f4cc 100644
--- a/src/algorithms/libs/conjugate_sc.h
+++ b/src/algorithms/libs/conjugate_sc.h
@@ -1,6 +1,6 @@
 /*!
  * \file conjugate_sc.h
- * \brief Adapts a std::complex<short> stream into two float streams
+ * \brief Conjugate a stream of lv_16sc_t ( std::complex<short> )
  * \author Carles Fernandez Prades, cfernandez(at)cttc.es
  *
  * -------------------------------------------------------------------------
diff --git a/src/algorithms/libs/volk_gnsssdr_module/volk_gnsssdr/kernels/volk_gnsssdr/volk_gnsssdr_32fc_32f_rotator_dot_prod_32fc_xn.h b/src/algorithms/libs/volk_gnsssdr_module/volk_gnsssdr/kernels/volk_gnsssdr/volk_gnsssdr_32fc_32f_rotator_dot_prod_32fc_xn.h
index 0a8674893..e8831a97f 100644
--- a/src/algorithms/libs/volk_gnsssdr_module/volk_gnsssdr/kernels/volk_gnsssdr/volk_gnsssdr_32fc_32f_rotator_dot_prod_32fc_xn.h
+++ b/src/algorithms/libs/volk_gnsssdr_module/volk_gnsssdr/kernels/volk_gnsssdr/volk_gnsssdr_32fc_32f_rotator_dot_prod_32fc_xn.h
@@ -74,7 +74,7 @@
 #include <volk_gnsssdr/volk_gnsssdr_complex.h>
 #include <volk_gnsssdr/saturation_arithmetic.h>
 #include <math.h>
-#include <stdio.h>
+//#include <stdio.h>
 
 #ifdef LV_HAVE_GENERIC