diff --git a/src/contact-selecter.cpp b/src/contact-selecter.cpp
index bf1011ec833c50362f6785e6bd68c49e69f9092b..c094572dccee5147c3247aaf54eabf96e524713a 100644
--- a/src/contact-selecter.cpp
+++ b/src/contact-selecter.cpp
@@ -28,6 +28,7 @@ public:contacter_op_space__INIT( void )
 contacter_op_space__INIT contacter_op_space_initiator;
 #endif //#ifdef VP_DEBUG
 
+#include <iostream>
 #include <sot-dyninv/commands-helper.h>
 #include <sot-dyninv/contact-selecter.h>
 #include <dynamic-graph/factory.h>
diff --git a/src/controller-pd.cpp b/src/controller-pd.cpp
index 3df99934d2e715e0594aefa10f9907524978b49a..06bdac393b7da62ceb9e508741e44682c3158e90 100644
--- a/src/controller-pd.cpp
+++ b/src/controller-pd.cpp
@@ -18,6 +18,7 @@
 #include <sot/core/debug.hh>
 #include <dynamic-graph/factory.h>
 
+#include <iostream>
 #include <sot-dyninv/commands-helper.h>
 
 namespace dynamicgraph
diff --git a/src/solver-dyn-reduced.cpp b/src/solver-dyn-reduced.cpp
index 894a6b2ec3e3b1fc0a66604ed53b743c46ea0406..643f1fffdeb7ace667d72720e18484b2ed1ec9eb 100644
--- a/src/solver-dyn-reduced.cpp
+++ b/src/solver-dyn-reduced.cpp
@@ -38,6 +38,7 @@ solver_op_space__INIT solver_op_space_initiator;
 #include <soth/HCOD.hpp>
 #include <sot-dyninv/task-dyn-pd.h>
 #include <sot/core/feature-point6d.hh>
+#include <iostream>
 #include <sstream>
 #include <soth/Algebra.hpp>
 #include <Eigen/QR>
diff --git a/src/solver-kine.cpp b/src/solver-kine.cpp
index 3ae4a1fc050ce8d21708b0848067d02c9f5a92da..b5672ce4c1dbb4669c31d3c38fc1d96f93be84b7 100644
--- a/src/solver-kine.cpp
+++ b/src/solver-kine.cpp
@@ -37,6 +37,7 @@ solver_op_space__INIT solver_op_space_initiator;
 #include <sot-dyninv/task-dyn-pd.h>
 #include <sot/core/feature-point6d.hh>
 #include <sstream>
+#include <iostream>
 #include <soth/Algebra.hpp>
 #include <Eigen/QR>
 #include <sys/time.h>
diff --git a/src/solver-op-space.cpp b/src/solver-op-space.cpp
index 2247acc30c56ea83f6720a48b8a0d64af9f669c9..502d2133d948929ccb224ed3839fd6a11dc8a64c 100644
--- a/src/solver-op-space.cpp
+++ b/src/solver-op-space.cpp
@@ -35,6 +35,7 @@ solver_op_space__INIT solver_op_space_initiator;
 #include <soth/HCOD.hpp>
 #include <sot-dyninv/task-dyn-pd.h>
 #include <sot/core/feature-point6d.hh>
+#include <iostream>
 #include <sstream>
 #include <soth/Algebra.hpp>
 #include <Eigen/QR>
diff --git a/src/task-dyn-inequality.cpp b/src/task-dyn-inequality.cpp
index fc62ae95f470a1b8ac179575c064cbc114208ecf..542f068f6c76b286ce1b70f532bcbfb378e11939 100644
--- a/src/task-dyn-inequality.cpp
+++ b/src/task-dyn-inequality.cpp
@@ -110,7 +110,7 @@ namespace dynamicgraph
 	assert( !withInf || insize==(int)refInf.size() );
 	assert( !withSup || insize==(int)refSup.size() );
 
-	using std::cout; using std::endl;
+	// using std::cout; using std::endl;
 	// int iterShow = 76;
 	// if(iter==iterShow)
 	//   {