--- tmview-01.03.orig/lX/writelx.c
+++ tmview-01.03/lX/writelx.c
@@ -908,7 +908,7 @@
     }
     srow+=sbmu_wide;
     sbmu=srow;
-    ((char*)ydest)+=ibytes_per_line;
+    ydest=((char*)ydest)+ibytes_per_line;
   }
   if(directscreen) {
     XPutImage(dpy,dviwin,imagecopygc,offimage,tx,ty,tx,ty,w,h);
@@ -996,7 +996,7 @@
     }
     srow+=sbmu_wide;
     sbmu=srow;
-    ((char*)ydest)+=ibytes_per_line;
+    ydest=((char*)ydest)+ibytes_per_line;
   }
   if(directscreen) {
     XPutImage(dpy,dviwin,imagecopygc,offimage,tx,ty,tx,ty,w,h); 
@@ -1034,7 +1034,7 @@
        ISET_PIXEL(xdest,cpix);
        xdest++;
     }
-    ((char*)ydest)+=ibytes_per_line;
+    ydest=((char*)ydest)+ibytes_per_line;
   }
   if(directscreen) {
     XSetForeground(dpy,winfillgc,cpix);
@@ -1084,7 +1084,7 @@
 #endif
       xdest++;
     }
-    ((char*)ydest)+=ibytes_per_line;
+    ydest=((char*)ydest)+ibytes_per_line;
   }
   if(directscreen) {
     XPutImage(dpy,dviwin,imagecopygc,offimage,tx,ty,tx,ty,w,h); 
@@ -1126,7 +1126,7 @@
       }
       xdest++;
     }
-    ((char*)ydest)+=ibytes_per_line;
+    ydest=((char*)ydest)+ibytes_per_line;
   }
   if(directscreen) {
     XPutImage(dpy,dviwin,imagecopygc,offimage,tx,ty,tx,ty,w,h);