diff --git a/include/viswin.cpp b/include/viswin.cpp
index dd800af77..1cc5deef9 100755
--- a/include/viswin.cpp
+++ b/include/viswin.cpp
@@ -807,7 +807,7 @@ void TViswin::paint_background(
 
         if (i && i->ok())
         {        
-          short delta = tabx(short(origin().x-x1));     // Primo pixel sorgente
+          short delta = tabx(short(origin().x-x1-X_OFFSET));     // Primo pixel sorgente
           if (delta < 0) delta = 0;
           if (delta < width)
           {   
@@ -815,8 +815,10 @@ void TViswin::paint_background(
             PNT p; p.h = delta; p.v = taby(y1);
             RCT src; xvt_rect_set(&src, p.h, p.v, width, min(p.v+taby(1)+scroll , i->height()));
             if (src.top < i->height())
-            { 
-              p.h = tabx(short(x1-origin().x+X_OFFSET)); p.v = taby(row);
+            {                     
+              short px = short(x1-origin().x+X_OFFSET);
+              if (px < X_OFFSET) px = X_OFFSET;
+              p.h = tabx(px); p.v = taby(row);
               RCT dst = src; xvt_rect_set_pos(&dst, p);
               i->draw(win(), dst, src);
             }