diff --git a/src/sys/graphics/objfont.cpp b/src/sys/graphics/objfont.cpp
index d2febfc..148b717 100755
--- a/src/sys/graphics/objfont.cpp
+++ b/src/sys/graphics/objfont.cpp
@@ -98,17 +98,17 @@
 
 void TBMFont::PutText(UInt32 x, UInt32 y, const char * TextString) {
   UInt32 xx, yy;
-  char * offset;
+  UInt8 * offset;
   UInt8 pix;
   char ch;
   if (!FontData) return;
   while (*TextString) {
     ch = *TextString;
     if ((CharWidthTable[ch]) && (ch!=' ')) {
-      offset=(FontData+((char)FontDataIdx[ch]));
-      for (yy=0; yy<=CharHeightTable[ch]-1; yy++) 
-        for (xx=0; xx<=CharWidthTable[ch]-1; xx++) {
-          pix = (UInt8)*offset;
+      offset=(UInt8 *)((UInt32)FontData+(UInt32)FontDataIdx[ch]);
+      for (yy=0; yy<=(UInt32)(CharHeightTable[ch]-1); yy++) 
+        for (xx=0; xx<=(UInt32)(CharWidthTable[ch]-1); xx++) {
+          pix = *offset;
           if (pix) Buf->putpixel(x+xx,y+yy,ColourTable[pix]);
         } // for xx   
       x+=CharWidthTable[ch];
diff --git a/src/sys/graphics/objfont.h b/src/sys/graphics/objfont.h
index f3a65bd..fb24637 100755
--- a/src/sys/graphics/objfont.h
+++ b/src/sys/graphics/objfont.h
@@ -29,12 +29,12 @@
 
 class TFont {
        protected:
-        char * FontDataIdx[256];
+        void * FontDataIdx[256];
         UInt16 CharWidthTable[256];
         UInt16 CharHeightTable[256];
         TGfx0* Buf;
         UInt32 FontDataSize;
-        char * FontData;
+        void * FontData;
        public:
         TFont(TGfx0 *);
         virtual void PutText(Int32, Int32,const char *)=0;