diff --git a/ChangeLog b/ChangeLog
index 08837ea43..c9ed33cdd 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,10 +1,10 @@
-2011-06-10 Stéphane Voltz <stef.dev@free.fr>
-	* backend/lexmark_models.c: fix missing motor initialization
-
-2011-06-09 Stéphane Voltz <stef.dev@free.fr>
+2011-06-13 Stéphane Voltz <stef.dev@free.fr>
 	* backend/genesys*.[ch] : rework of gl847 to reach 2400 dpi for 
 	LiDE 100 and 4800 dpi for LiDE 200
 
+2011-06-10 Stéphane Voltz <stef.dev@free.fr>
+	* backend/lexmark_models.c: fix missing motor initialization
+
 2011-06-07 Stéphane Voltz <stef.dev@free.fr>
 	* backend/genesys.c backend/genesys.h backend/genesys_conv.c:
 	add blank page skipping and rotation detection options
diff --git a/backend/genesys_gl847.c b/backend/genesys_gl847.c
index 9b44e48c7..55f5342a8 100644
--- a/backend/genesys_gl847.c
+++ b/backend/genesys_gl847.c
@@ -2509,7 +2509,7 @@ gl847_init_regs_for_shading (Genesys_Device * dev)
     }
 
   /* TODO this is a good approximation, replace by exact value */
-  dev->scanhead_position_in_steps = (6*dev->model->shading_lines*600)/dev->calib_resolution;
+  dev->scanhead_position_in_steps = (5*dev->model->shading_lines*600)/dev->calib_resolution;
 
   DBGCOMPLETED;
   return SANE_STATUS_GOOD;