diff --git a/device.cpp b/device.cpp
index 3410c44..709b1f4 100644
--- a/device.cpp
+++ b/device.cpp
@@ -5,13 +5,14 @@
 
 using namespace std;
 
-Device::Device(FtdiJtag *jtag, string filename):
+Device::Device(FtdiJtag *jtag, string filename, bool verbose):
 		_filename(filename),
 		_file_extension(filename.substr(filename.find_last_of(".") +1)),
-		_mode(NONE_MODE)
+		_mode(NONE_MODE), _verbose(verbose)
 {
 	_jtag = jtag;
-	cout << _file_extension << endl;
+	if (_verbose)
+		cout << "File type : " << _file_extension << endl;
 }
 
 Device::~Device() {}
diff --git a/device.hpp b/device.hpp
index e16946c..c425e03 100644
--- a/device.hpp
+++ b/device.hpp
@@ -18,7 +18,7 @@ class Device {
 			FLASH_MODE = 1,
 			MEM_MODE = 2
 		};
-		Device(FtdiJtag *jtag, std::string filename);
+		Device(FtdiJtag *jtag, std::string filename, bool verbose = false);
 		virtual ~Device();
 		virtual void program(unsigned int offset = 0) = 0;
 		virtual int  idCode() = 0;
@@ -28,6 +28,7 @@ class Device {
 		std::string _filename;
 		std::string _file_extension;
 		enum prog_mode _mode;
+		bool _verbose;
 };
 
 #endif