diff -r d9c5eaf85fab -r 48f29a1d43d6 lib/unigraphic/GraphicsDisplay.cpp
--- a/lib/unigraphic/GraphicsDisplay.cpp	Mon Oct 04 21:14:39 2021 +0200
+++ b/lib/unigraphic/GraphicsDisplay.cpp	Mon Oct 04 21:15:35 2021 +0200
@@ -277,9 +277,9 @@
 {
     char_x=x;
     char_y=y;
-    int j,i,b;
+    unsigned int j, i, b;
     unsigned char* zeichen;
-    unsigned char z,w,v, wtot;
+    unsigned char z, w, v, wtot;
 
  /*   // read font parameter from start of array
     offset = font[0];                    // bytes / char
@@ -301,6 +301,8 @@
 		// so if the char to write crosses the width, do not display it
 		return;
 	}
+	wtot = 0;
+
     if ((c < firstch) || (c > lastch)) {   // test char range - if not exist fill with blank
 		window(char_x, char_y, fonthor*fontzoomhor, fontvert*fontzoomver); // char box
       window_pushpixel(_background, fontzoomhor*fonthor*fontvert*fontzoomver); //(color, howmany)
@@ -353,7 +355,7 @@
 
 void GraphicsDisplay::Bitmap_BW(Bitmap_s bm, int x, int y)
 {
-    int h,v,b;
+    unsigned int h,v,b;
  //   int cropX;
     char d;
     if(x<0) x=0;
@@ -376,17 +378,15 @@
     }
     if(auto_up) copy_to_lcd();
 }
-void GraphicsDisplay::Bitmap(int x, int y, int w, int h,unsigned char *bitmap)
+void GraphicsDisplay::Bitmap(unsigned int x, unsigned int y, unsigned int w, unsigned int h,unsigned char *bitmap)
 {
     int  j;
     unsigned char  padd;
     unsigned short *bitmap_ptr = (unsigned short *)bitmap;
 
     padd = w%2; // the lines are padded to multiple of 4 bytes in a bitmap
-    if(x<0) x=0;
-    else if(x>=oriented_width) return;
-    if(y<0) y=0;
-    else if(y>=oriented_height) return;
+	if(x >= oriented_width) return;
+    if(y >= oriented_height) return;
     int cropX = (x+w)-oriented_width;
     if(cropX<0) cropX=0;
     int cropY = (y+h)-oriented_height;