diff --git a/filter/rastertoepson.c b/filter/rastertoepson.c

index 4efe669..e8fe0c6 100644

--- a/filter/rastertoepson.c

+++ b/filter/rastertoepson.c

@@ -307,7 +307,7 @@ StartPage(

   if (DotBytes)

   {

-    if ((LineBuffers[0] = calloc((size_t)DotBytes, header->cupsWidth * (size_t)(Shingling + 1))) == NULL)

+    if ((LineBuffers[0] = calloc((size_t)DotBytes, (header->cupsWidth + 7) * (size_t)(Shingling + 1))) == NULL)

     {

       fputs("ERROR: Unable to allocate memory\n", stderr);

       exit(1);