diff --git a/src/driver.cpp b/src/driver.cpp
--- a/src/driver.cpp
+++ b/src/driver.cpp
@@ -30,6 +30,7 @@ MusicDriver *_music_driver; ///< The cur
 char *_ini_musicdriver;     ///< The music driver a stored in the configuration file.
 
 char *_ini_blitter;         ///< The blitter as stored in the configuration file.
+bool _blitter_autodetected; ///< Was the blitter autodetected or specified by the user?
 
 /**
  * Get a string parameter the list of parameters.