1 files changed, 1 insertions, 1 deletions
diff --git a/gob/driver_vga.h b/gob/driver_vga.h
index b2dbef52f9..13be635e9a 100644
--- a/gob/driver_vga.h
+++ b/gob/driver_vga.h
@@ -33,7 +33,7 @@ public:
         void drawSprite(SurfaceDesc *source, SurfaceDesc *dest, int16 left, int16 top, int16 right, int16 bottom, int16 x, int16 y, int16 transp);
         void fillRect(SurfaceDesc *dest, int16 left, int16 top, int16 right, int16 bottom, byte color);
         void putPixel(int16 x, int16 y, byte color, SurfaceDesc *dest);
-        void drawLetter(char item, int16 x, int16 y, FontDesc *fontDesc, byte color1, byte color2, byte transp, SurfaceDesc *dest);
+        void drawLetter(unsigned char item, int16 x, int16 y, FontDesc *fontDesc, byte color1, byte color2, byte transp, SurfaceDesc *dest);
 	void drawLine(SurfaceDesc *dest, int16 x0, int16 y0, int16 x1, int16 y1, byte color);
 	void drawPackedSprite(byte *sprBuf, int16 width, int16 height, int16 x, int16 y, byte transp, SurfaceDesc *dest);
 };