diff --git a/source/common/screen.cpp b/source/common/screen.cpp
index 5d30fd9..b5a9479 100644
--- a/source/common/screen.cpp
+++ b/source/common/screen.cpp
@@ -16,8 +16,8 @@ Screen::Screen(SDL_Window *window, SDL_Renderer *renderer, Asset *asset, options
 
     gameCanvasWidth = options->gameWidth;
     gameCanvasHeight = options->gameHeight;
-    borderWidth = options->gameWidth * options->borderSize;
-    borderHeight = options->gameHeight * options->borderSize;
+    borderWidth = options->borderWidth * 2;
+    borderHeight = options->borderHeight * 2;
     notificationLogicalWidth = gameCanvasWidth;
     notificationLogicalHeight = gameCanvasHeight;
 
@@ -203,9 +203,15 @@ void Screen::setBlendMode(SDL_BlendMode blendMode)
 }
 
 // Establece el tamaño del borde
-void Screen::setBorderSize(float s)
+void Screen::setBorderWidth(int s)
 {
-    options->borderSize = s;
+    options->borderWidth = s;
+}
+
+// Establece el tamaño del borde
+void Screen::setBorderHeight(int s)
+{
+    options->borderHeight = s;
 }
 
 // Establece si se ha de ver el borde en el modo ventana
diff --git a/source/common/screen.h b/source/common/screen.h
index deacea9..0c19343 100644
--- a/source/common/screen.h
+++ b/source/common/screen.h
@@ -101,7 +101,8 @@ public:
 	void setBlendMode(SDL_BlendMode blendMode);
 
 	// Establece el tamaño del borde
-	void setBorderSize(float s);
+	void setBorderWidth(int s);
+	void setBorderHeight(int s);
 
 	// Establece si se ha de ver el borde en el modo ventana
 	void setBorderEnabled(bool value);
diff --git a/source/common/utils.h b/source/common/utils.h
index 57e236f..a5834a0 100644
--- a/source/common/utils.h
+++ b/source/common/utils.h
@@ -136,7 +136,8 @@ struct options_t
 	bool integerScale;				 // Indica si el escalado de la imagen ha de ser entero en el modo a pantalla completa
 	bool keepAspect;				 // Indica si se ha de mantener la relación de aspecto al poner el modo a pantalla completa
 	bool borderEnabled;				 // Indica si ha de mostrar el borde en el modo de ventana
-	float borderSize;				 // Porcentaje de borde que se añade a lo ventana
+	int borderWidth;				 // Cantidad de pixels que se añade en el borde de la ventana
+	int borderHeight;				 // Cantidad de pixels que se añade en el borde de la ventana
 	palette_e palette;				 // Paleta de colores a usar en el juego
 	bool console;					 // Indica si ha de mostrar información por la consola de texto
 	cheat_t cheat;					 // Contiene trucos y ventajas para el juego
diff --git a/source/director.cpp b/source/director.cpp
index 850c0b7..7ebe4e7 100644
--- a/source/director.cpp
+++ b/source/director.cpp
@@ -125,7 +125,8 @@ void Director::initOptions()
 	options->integerScale = true;
 	options->keepAspect = true;
 	options->borderEnabled = true;
-	options->borderSize = 0.2f;
+	options->borderWidth = 32;
+	options->borderHeight = 24;
 	options->palette = p_zxspectrum;
 
 	// Estos valores no se guardan en el fichero de configuraci´ón
@@ -358,7 +359,8 @@ bool Director::saveConfig()
 	file << "integerScale=" + boolToString(options->integerScale) + "\n";
 	file << "keepAspect=" + boolToString(options->keepAspect) + "\n";
 	file << "borderEnabled=" + boolToString(options->borderEnabled) + "\n";
-	file << "borderSize=" + std::to_string(options->borderSize) + "\n";
+	file << "borderWidth=" + std::to_string(options->borderWidth) + "\n";
+	file << "borderHeight=" + std::to_string(options->borderHeight) + "\n";
 	file << "palette=" + std::to_string(options->palette) + "\n";
 
 	file << "\n## ONLINE OPTIONS\n";
@@ -1097,13 +1099,14 @@ bool Director::setOptions(options_t *options, std::string var, std::string value
 		options->borderEnabled = stringToBool(value);
 	}
 
-	else if (var == "borderSize")
+	else if (var == "borderWidth")
 	{
-		options->borderSize = std::stof(value);
-		if (options->borderSize < 0.0f || options->borderSize > 0.5f)
-		{
-			options->borderSize = 0.1f;
-		}
+		options->borderWidth = std::stoi(value);
+	}
+
+	else if (var == "borderHeight")
+	{
+		options->borderHeight = std::stoi(value);
 	}
 
 	else if (var == "palette")
@@ -1278,8 +1281,8 @@ bool Director::initSDL()
 		int incH = 0;
 		if (options->borderEnabled)
 		{
-			incW = options->gameWidth * options->borderSize;
-			incH = options->gameHeight * options->borderSize;
+			incW = options->borderWidth * 2;
+			incH = options->borderHeight * 2;
 		}
 
 		window = SDL_CreateWindow(WINDOW_CAPTION, SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, (options->gameWidth + incW) * options->windowSize, (options->gameHeight + incH) * options->windowSize, SDL_WINDOW_SHOWN | SDL_WINDOW_ALLOW_HIGHDPI);