diff --git a/include/common/defaults.h b/include/common/defaults.h
index 96e0f61..0a4f420 100644
--- a/include/common/defaults.h
+++ b/include/common/defaults.h
@@ -131,6 +131,7 @@
 #define DEF_CHECK_REQ   "OPTIONS / HTTP/1.0\r\n"
 #define DEF_SMTP_CHECK_REQ   "HELO localhost\r\n"
 #define DEF_LDAP_CHECK_REQ   "\x30\x0c\x02\x01\x01\x60\x07\x02\x01\x03\x04\x00\x80\x00"
+#define DEF_REDIS_CHECK_REQ  "*1\r\n$4\r\nPING\r\n"
 
 #define DEF_HANA_ONERR		HANA_ONERR_FAILCHK
 #define DEF_HANA_ERRLIMIT	10
diff --git a/include/types/proxy.h b/include/types/proxy.h
index 82c3458..b4385a9 100644
--- a/include/types/proxy.h
+++ b/include/types/proxy.h
@@ -155,6 +155,7 @@
 #define PR_O2_PGSQL_CHK 0x10000000      /* use PGSQL check for server health */
 #define PR_O2_DISPATCH  0x20000000      /* use dispatch mode */
 #define PR_O2_NODELAY   0x40000000      /* fully interactive mode, never delay outgoing data */
+#define PR_O2_REDIS_CHK 0x80000000      /* use LDAP check for server health */
 /* end of proxy->options2 */
 
 /* bits for sticking rules */