diff --git a/drivers/scsi/hpsa_cmd.h b/drivers/scsi/hpsa_cmd.h
index 6a919ada96b3090f516b99838b1b71a16f8641f1..dffda96d620f2c209a3b771250dac6527d77853e 100644
--- a/drivers/scsi/hpsa_cmd.h
+++ b/drivers/scsi/hpsa_cmd.h
@@ -289,7 +289,7 @@ struct SenseSubsystem_info {
 #define BMIC_IDENTIFY_CONTROLLER 0x11
 #define BMIC_SET_DIAG_OPTIONS 0xF4
 #define BMIC_SENSE_DIAG_OPTIONS 0xF5
-#define HPSA_DIAG_OPTS_DISABLE_RLD_CACHING 0x40000000
+#define HPSA_DIAG_OPTS_DISABLE_RLD_CACHING 0x80000000
 #define BMIC_SENSE_SUBSYSTEM_INFORMATION 0x66
 #define BMIC_SENSE_STORAGE_BOX_PARAMS 0x65