diff --git a/include/proto/checks.h b/include/proto/checks.h
index b3ea917..bb275c8 100644
--- a/include/proto/checks.h
+++ b/include/proto/checks.h
@@ -74,7 +74,9 @@
 int proxy_parse_ssl_hello_chk_opt(char **args, int cur_arg, struct proxy *curpx, struct proxy *defpx,
 				  const char *file, int line);
 int proxy_parse_smtpchk_opt(char **args, int cur_arg, struct proxy *curpx, struct proxy *defpx,
-			    const char *file, int line);
+			const char *file, int line);
+int proxy_parse_pgsql_check_opt(char **args, int cur_arg, struct proxy *curpx, struct proxy *defpx,
+				const char *file, int line);
 
 #endif /* _PROTO_CHECKS_H */
 
diff --git a/include/types/checks.h b/include/types/checks.h
index 541666c..9b34cbe 100644
--- a/include/types/checks.h
+++ b/include/types/checks.h
@@ -312,6 +312,7 @@
 #define TCPCHK_RULES_SHARED      0x00000001 /* Set for shared list of tcp-check rules */
 #define TCPCHK_RULES_DEF         0x00000002 /* Ruleset inherited from the default section */
 
+#define TCPCHK_RULES_PGSQL_CHK   0x00000010
 #define TCPCHK_RULES_REDIS_CHK   0x00000020
 #define TCPCHK_RULES_SMTP_CHK    0x00000030
 #define TCPCHK_RULES_SSL3_CHK    0x00000070
diff --git a/include/types/proxy.h b/include/types/proxy.h
index 0f4301d..be5b5c9 100644
--- a/include/types/proxy.h
+++ b/include/types/proxy.h
@@ -169,9 +169,7 @@
 
 /* server health checks */
 #define PR_O2_CHK_NONE  0x00000000      /* no L7 health checks configured (TCP by default) */
-#define PR_O2_PGSQL_CHK 0x10000000      /* use PGSQL check for server health */
-/* unused: 0x20000000 */
-/* unused  0x30000000 */
+/* unused: 0x10000000..0x30000000 */
 #define PR_O2_HTTP_CHK  0x40000000      /* use HTTP 'OPTIONS' method to check server health */
 #define PR_O2_MYSQL_CHK 0x50000000      /* use MYSQL check for server health */
 #define PR_O2_LDAP_CHK  0x60000000      /* use LDAP check for server health */