diff --git a/ChangeLog b/ChangeLog
index ad227194c7..3160b72369 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2008-01-22  Sven Neumann  <sven@gimp.org>
+
+	* plug-ins/common/pcx.c: corrected check of the bytesperline field
+	which caused monochrome PCX images to be rejected (bug #510658).
+
 2008-01-22  Sven Neumann  <sven@gimp.org>
 
 	* app/core/gimp.[ch]: added new function gimp_use_gegl().
diff --git a/plug-ins/common/pcx.c b/plug-ins/common/pcx.c
index a9d1d7b0fe..7fd2ce0596 100644
--- a/plug-ins/common/pcx.c
+++ b/plug-ins/common/pcx.c
@@ -381,7 +381,7 @@ load_image (const gchar *filename)
       g_message (_("Unsupported or invalid image height: %d"), height);
       return -1;
     }
-  if (bytesperline < width)
+  if (bytesperline < (width * pcx_header.bpp) / 8)
     {
       g_message (_("Invalid number of bytes per line in PCX header"));
       return -1;