diff --git a/src/devctxt.c b/src/devctxt.c
index c6a41bb..e16cbb3 100755
--- a/src/devctxt.c
+++ b/src/devctxt.c
@@ -19,7 +19,7 @@ inline static BYTE line_clip_outcode(INT32 x, INT32 y, INT32 xmin, INT32 ymin, I
   return rc;
 }
 
-#define CPX 4  /* clipping precision in bits */
+#define CPX 8  /* clipping precision in bits */
 
 /* these macros keep the number of bits straight when doing fixed-point multiply & divide */
 #define M(a, b)  ((((a) * (b))) >> CPX)
@@ -106,7 +106,7 @@ static BOOL internal_line(PDCTXT pdctxt, INT32 x1, INT32 y1, INT32 x2, INT32 y2)
 {
   INT32 buffer[4];
   if (line_clip(buffer, x1 << CPX, y1 << CPX, x2 << CPX, y2 << CPX, pdctxt->cliprect.left << CPX, pdctxt->cliprect.top << CPX,
-				(pdctxt->cliprect.right - 1) << CPX, (pdctxt->cliprect.bottom - 1) << CPX))
+				pdctxt->cliprect.right << CPX, pdctxt->cliprect.bottom << CPX))
     return (*pdctxt->funcs->line)(pdctxt->privdata, buffer[0] >> CPX, buffer[1] >> CPX, buffer[2] >> CPX, buffer[3] >> CPX, pdctxt->color, pdctxt->rop2);
   return TRUE;
 }