diff --git a/backend/hp5590_cmds.c b/backend/hp5590_cmds.c
index f76be1e4e..1a751b114 100644
--- a/backend/hp5590_cmds.c
+++ b/backend/hp5590_cmds.c
@@ -761,7 +761,7 @@ hp5590_read_max_scan_count (SANE_Int dn, unsigned int *max_count)
  */
 
 /******************************************************************************/
-static SANE_Status
+static __sane_unused__ SANE_Status
 hp5590_read_eeprom_all_cmd (SANE_Int dn)
 {
   u_int8_t eeprom[255];