diff --git a/ChangeLog b/ChangeLog
index f49087d50..eb4a9f289 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2005-10-05  Mattias Ellert <mattias.ellert@tsl.uu.se>
+
+	* backend/microtek2.c: Off-by-one error
+
 2005-10-03  Henning Meier-Geinitz <henning@meier-geinitz.de>
 
 	* AUTHORS acinclude.m4 configure configure.in backend/Makefile.in
diff --git a/backend/microtek2.c b/backend/microtek2.c
index d468613d9..0e2a079e7 100644
--- a/backend/microtek2.c
+++ b/backend/microtek2.c
@@ -3576,7 +3576,7 @@ sane_get_option_descriptor(SANE_Handle handle, SANE_Int n)
     DBG(255, "sane_get_option_descriptor: handle=%p, sod=%p, opt=%d\n",
               (void *) handle, (void *) ms->sod, n);
 
-    if ( n < 0 || n > NUM_OPTIONS )
+    if ( n < 0 || n >= NUM_OPTIONS )
       {
         DBG(30, "sane_get_option_descriptor: invalid option %d\n", n);
         return NULL;