diff --git a/source/asset.cpp b/source/asset.cpp
index 1294567..21f1bba 100644
--- a/source/asset.cpp
+++ b/source/asset.cpp
@@ -4,6 +4,7 @@
 Asset::Asset(std::string path)
 {
     mExecutablePath = path;
+    longest_name = 0;
 }
 
 // Destructor
@@ -19,6 +20,9 @@ void Asset::add(std::string file, enum assetType type, bool required)
     temp.type = type;
     temp.required = required;
     mFileList.push_back(temp);
+
+    const std::string filename = file.substr(file.find_last_of("\\/") + 1);
+    longest_name = SDL_max(longest_name, filename.size());
 }
 
 // Devuelve el fichero de un elemento de la lista a partir de una cadena
@@ -37,14 +41,27 @@ bool Asset::check()
 {
     bool success = true;
 
+    printf("\n** Checking files.\n");
+
     // Comprueba la lista de ficheros clasificandolos por tipo
     for (int type = 0; type < maxAssetType; type++)
     {
-        printf("\n>> %s FILES\n", getTypeName(type).c_str());
+        // Comprueba si hay ficheros de ese tipo
+        bool any = false;
 
         for (int i = 0; i < mFileList.size(); i++)
             if ((mFileList[i].required) && (mFileList[i].type == type))
-                success &= checkFile(mFileList[i].file);
+                any = true;
+
+        // Si hay ficheros de ese tipo, comprueba si existen
+        if (any)
+        {
+            printf("\n>> %s FILES\n", getTypeName(type).c_str());
+
+            for (int i = 0; i < mFileList.size(); i++)
+                if ((mFileList[i].required) && (mFileList[i].type == type))
+                    success &= checkFile(mFileList[i].file);
+        }
     }
 
     // Resultado
@@ -59,7 +76,8 @@ bool Asset::check()
 // Comprueba que existe un fichero
 bool Asset::checkFile(std::string path)
 {
-    bool success = true;
+    bool success = false;
+    std::string result = "ERROR";
 
     // Comprueba si existe el fichero
     const std::string filename = path.substr(path.find_last_of("\\/") + 1);
@@ -67,14 +85,13 @@ bool Asset::checkFile(std::string path)
 
     if (file != NULL)
     {
-        printf("Checking file %-20s [OK]\n", filename.c_str());
+        result = "OK";
+        success = true;
         SDL_RWclose(file);
     }
-    else
-    {
-        printf("Checking file %-20s [ERROR]\n", filename.c_str());
-        success = false;
-    }
+
+    const std::string s = "Checking file %-" + std::to_string(longest_name) + "s [" + result + "]\n";
+    printf(s.c_str(), filename.c_str());
 
     return success;
 }
diff --git a/source/asset.h b/source/asset.h
index 8ed626d..ba8cb6c 100644
--- a/source/asset.h
+++ b/source/asset.h
@@ -1,5 +1,6 @@
 #pragma once
-#include "ifdefs.h"
+
+#include <SDL2/SDL.h>
 #include <string>
 #include <vector>
 
@@ -32,6 +33,8 @@ private:
 		bool required;		 // Indica si es un fichero que debe de existir
 	};
 
+	int longest_name; // Contiene la longitud del nombre de fichero mas largo
+
 	std::vector<item_t> mFileList;
 	std::string mExecutablePath;