diff --git a/grafproc.asm b/grafproc.asm
index dc7b807..dcb1b89 100644
--- a/grafproc.asm
+++ b/grafproc.asm
@@ -140,8 +140,13 @@ LineParametersReady
     ora DX+1
     ora DY
     ora DY+1
-    jeq EndOfDraw
+	bne NotOnePoint
+	; length=0
+	sta LineLength
+	sta LineLength+1
+    jmp EndOfDraw
 
+NotOnePoint
     ; here we have DX,DY,XK and we know which operations
     ; are to be performed with these factors when doing PLOT
     ; (accordingly to given bits of 'HowToDraw')
diff --git a/scorch.bin b/scorch.bin
index 7ea6cad..aff0117 100644
Binary files a/scorch.bin and b/scorch.bin differ
diff --git a/scorch.xex b/scorch.xex
index 545699b..21236d1 100644
Binary files a/scorch.xex and b/scorch.xex differ