diff --git a/doc/configuration.txt b/doc/configuration.txt
index d0643574b..73652aa9b 100644
--- a/doc/configuration.txt
+++ b/doc/configuration.txt
@@ -6060,6 +6060,10 @@ hash-type <method> <function> <modifier>
               a better distribution or less predictable results especially when
               used on strings.
 
+       none   don't hash the key, the key will be used as a hash, this can be
+              useful to manually hash the key using a converter for that purpose
+              and let haproxy use the result directly.
+
     <modifier> indicates an optional method applied after hashing the key :
 
        avalanche   This directive indicates that the result from the hash
diff --git a/include/haproxy/backend-t.h b/include/haproxy/backend-t.h
index cce451a33..8d5973871 100644
--- a/include/haproxy/backend-t.h
+++ b/include/haproxy/backend-t.h
@@ -118,11 +118,12 @@
 #define BE_LB_HASH_MOD    0x200000  /* get/clear hash modifier */
 
 /* BE_LB_HFCN_* is the hash function, to be used with BE_LB_HASH_FUNC */
-#define BE_LB_HFCN_SDBM   0x000000 /* sdbm hash */
-#define BE_LB_HFCN_DJB2   0x400000 /* djb2 hash */
-#define BE_LB_HFCN_WT6    0x800000 /* wt6 hash */
-#define BE_LB_HFCN_CRC32  0xC00000 /* crc32 hash */
-#define BE_LB_HASH_FUNC   0xC00000 /* get/clear hash function */
+#define BE_LB_HFCN_SDBM   0x000000  /* sdbm hash */
+#define BE_LB_HFCN_DJB2   0x400000  /* djb2 hash */
+#define BE_LB_HFCN_WT6    0x800000  /* wt6 hash */
+#define BE_LB_HFCN_CRC32  0xC00000  /* crc32 hash */
+#define BE_LB_HFCN_NONE   0x1000000 /* none - no hash */
+#define BE_LB_HASH_FUNC   0x1C00000 /* get/clear hash function */
 
 
 /* various constants */
diff --git a/src/backend.c b/src/backend.c
index e0b5a5877..e7e8d29ed 100644
--- a/src/backend.c
+++ b/src/backend.c
@@ -84,6 +84,14 @@ static unsigned int gen_hash(const struct proxy* px, const char* key, unsigned l
 	case BE_LB_HFCN_CRC32:
 		hash = hash_crc32(key, len);
 		break;
+	case BE_LB_HFCN_NONE:
+		/* use key as a hash */
+		{
+			const char *_key = key;
+
+			hash = read_int64(&_key, _key + len);
+		}
+		break;
 	case BE_LB_HFCN_SDBM:
 		/* this is the default hash function */
 	default:
diff --git a/src/cfgparse-listen.c b/src/cfgparse-listen.c
index cddb9fc79..f039a4eb3 100644
--- a/src/cfgparse-listen.c
+++ b/src/cfgparse-listen.c
@@ -2624,6 +2624,9 @@ int cfg_parse_listen(const char *file, int linenum, char **args, int kwm)
 			else if (strcmp(args[2], "crc32") == 0) {
 				curproxy->lbprm.algo |= BE_LB_HFCN_CRC32;
 			}
+			else if (strcmp(args[2], "none") == 0) {
+				curproxy->lbprm.algo |= BE_LB_HFCN_NONE;
+			}
 			else {
 				ha_alert("parsing [%s:%d] : '%s' only supports 'sdbm', 'djb2', 'crc32', or 'wt6' hash functions.\n", file, linenum, args[0]);
 				err_code |= ERR_ALERT | ERR_FATAL;