diff --git a/src/gui/widget/keyboard_input.cpp b/src/gui/widget/keyboard_input.cpp
index af2280334..2310ef6c4 100644
--- a/src/gui/widget/keyboard_input.cpp
+++ b/src/gui/widget/keyboard_input.cpp
@@ -191,7 +191,7 @@ CKeyboardInput::CKeyboardInput(const neutrino_locale_t Name, std::string* Value,
 	observ = Observ;
 	hint_1 = Hint_1;
 	hint_2 = Hint_2;
-	inputString = new CInputString(inputSize);
+	inputString = NULL;
 	layout = NULL;
 	selected = 0;
 	caps = 0;
@@ -204,14 +204,14 @@ CKeyboardInput::CKeyboardInput(const std::string &Name, std::string *Value, int
 	name = NONEXISTANT_LOCALE;
 	head = Name;
 	valueString = Value;
-	inputSize =  Size;
+	inputSize = Size;
 
 	iconfile = Icon ? Icon : "";
 
 	observ = Observ;
 	hint_1 = Hint_1;
 	hint_2 = Hint_2;
-	inputString = new CInputString(inputSize);
+	inputString = NULL;
 	layout = NULL;
 	selected = 0;
 	caps = 0;
@@ -221,7 +221,6 @@ CKeyboardInput::CKeyboardInput(const std::string &Name, std::string *Value, int
 
 CKeyboardInput::~CKeyboardInput()
 {
-	delete inputString;
 }
 
 #define BORDER_OFFSET 20
@@ -249,6 +248,12 @@ void CKeyboardInput::init()
 	width = std::max(iwidth, kwidth);
 	width = std::min(width, (int) frameBuffer->getScreenWidth());
 
+	if (!inputSize || (iwidth > width)) { /* auto calc inputSize */
+		inputSize = (width - 2*offset) / input_w;
+		iwidth = inputSize*input_w + 2*offset;
+	}
+	inputString = new CInputString(inputSize);
+
 	int tmp_w = g_Font[SNeutrinoSettings::FONT_TYPE_MENU_TITLE]->getRenderWidth(head);
 	if (!(iconfile.empty()))
 	{
@@ -596,6 +601,9 @@ int CKeyboardInput::exec(CMenuTarget* parent, const std::string &)
 
 	*valueString = inputString->getValue();
 
+	delete inputString;
+	inputString = NULL;
+
 	if ((observ) && (msg == CRCInput::RC_red))
 		observ->changeNotify(name, (void *) valueString->c_str());
 
diff --git a/src/gui/widget/keyboard_input.h b/src/gui/widget/keyboard_input.h
index 45657d5dd..10e74aac3 100644
--- a/src/gui/widget/keyboard_input.h
+++ b/src/gui/widget/keyboard_input.h
@@ -124,8 +124,8 @@ class CKeyboardInput : public CMenuTarget
 		virtual void setLayout();
 
 	public:
-		CKeyboardInput(const neutrino_locale_t Name, std::string* Value, int Size, CChangeObserver* Observ = NULL, const char * const Icon = NULL, const neutrino_locale_t Hint_1 = NONEXISTANT_LOCALE, const neutrino_locale_t Hint_2 = NONEXISTANT_LOCALE);
-		CKeyboardInput(const std::string      &Name, std::string* Value, int Size, CChangeObserver* Observ = NULL, const char * const Icon = NULL, const neutrino_locale_t Hint_1 = NONEXISTANT_LOCALE, const neutrino_locale_t Hint_2 = NONEXISTANT_LOCALE);
+		CKeyboardInput(const neutrino_locale_t Name, std::string* Value, int Size = 0, CChangeObserver* Observ = NULL, const char * const Icon = NULL, const neutrino_locale_t Hint_1 = NONEXISTANT_LOCALE, const neutrino_locale_t Hint_2 = NONEXISTANT_LOCALE);
+		CKeyboardInput(const std::string      &Name, std::string* Value, int Size = 0, CChangeObserver* Observ = NULL, const char * const Icon = NULL, const neutrino_locale_t Hint_1 = NONEXISTANT_LOCALE, const neutrino_locale_t Hint_2 = NONEXISTANT_LOCALE);
 		~CKeyboardInput();
 
 		void hide();