diff --git a/src/sample.c b/src/sample.c
index 32255cb21..1b2abfd81 100644
--- a/src/sample.c
+++ b/src/sample.c
@@ -4036,18 +4036,18 @@ static int smp_fetch_uuid(const struct arg *args, struct sample *smp, const char
  * instance IPv4/IPv6 must be declared IPv4.
  */
 static struct sample_fetch_kw_list smp_kws = {ILH, {
-	{ "always_false", smp_fetch_false, 0,            NULL, SMP_T_BOOL, SMP_USE_INTRN },
-	{ "always_true",  smp_fetch_true,  0,            NULL, SMP_T_BOOL, SMP_USE_INTRN },
-	{ "env",          smp_fetch_env,   ARG1(1,STR),  NULL, SMP_T_STR,  SMP_USE_INTRN },
-	{ "date",         smp_fetch_date,  ARG2(0,SINT,STR), smp_check_date_unit, SMP_T_SINT, SMP_USE_INTRN },
-	{ "date_us",      smp_fetch_date_us,  0,         NULL, SMP_T_SINT, SMP_USE_INTRN },
-	{ "hostname",     smp_fetch_hostname, 0,         NULL, SMP_T_STR,  SMP_USE_INTRN },
-	{ "nbproc",       smp_fetch_nbproc,0,            NULL, SMP_T_SINT, SMP_USE_INTRN },
-	{ "proc",         smp_fetch_proc,  0,            NULL, SMP_T_SINT, SMP_USE_INTRN },
-	{ "thread",       smp_fetch_thread,  0,          NULL, SMP_T_SINT, SMP_USE_INTRN },
-	{ "rand",         smp_fetch_rand,  ARG1(0,SINT), NULL, SMP_T_SINT, SMP_USE_INTRN },
+	{ "always_false", smp_fetch_false, 0,            NULL, SMP_T_BOOL, SMP_USE_CONST },
+	{ "always_true",  smp_fetch_true,  0,            NULL, SMP_T_BOOL, SMP_USE_CONST },
+	{ "env",          smp_fetch_env,   ARG1(1,STR),  NULL, SMP_T_STR,  SMP_USE_CONST },
+	{ "date",         smp_fetch_date,  ARG2(0,SINT,STR), smp_check_date_unit, SMP_T_SINT, SMP_USE_CONST },
+	{ "date_us",      smp_fetch_date_us,  0,         NULL, SMP_T_SINT, SMP_USE_CONST },
+	{ "hostname",     smp_fetch_hostname, 0,         NULL, SMP_T_STR,  SMP_USE_CONST },
+	{ "nbproc",       smp_fetch_nbproc,0,            NULL, SMP_T_SINT, SMP_USE_CONST },
+	{ "proc",         smp_fetch_proc,  0,            NULL, SMP_T_SINT, SMP_USE_CONST },
+	{ "thread",       smp_fetch_thread,  0,          NULL, SMP_T_SINT, SMP_USE_CONST },
+	{ "rand",         smp_fetch_rand,  ARG1(0,SINT), NULL, SMP_T_SINT, SMP_USE_CONST },
 	{ "stopping",     smp_fetch_stopping, 0,         NULL, SMP_T_BOOL, SMP_USE_INTRN },
-	{ "uuid",         smp_fetch_uuid,  ARG1(0, SINT),      smp_check_uuid, SMP_T_STR, SMP_USE_INTRN },
+	{ "uuid",         smp_fetch_uuid,  ARG1(0, SINT),      smp_check_uuid, SMP_T_STR, SMP_USE_CONST },
 
 	{ "cpu_calls",    smp_fetch_cpu_calls,  0,       NULL, SMP_T_SINT, SMP_USE_INTRN },
 	{ "cpu_ns_avg",   smp_fetch_cpu_ns_avg, 0,       NULL, SMP_T_SINT, SMP_USE_INTRN },
@@ -4055,13 +4055,13 @@ static struct sample_fetch_kw_list smp_kws = {ILH, {
 	{ "lat_ns_avg",   smp_fetch_lat_ns_avg, 0,       NULL, SMP_T_SINT, SMP_USE_INTRN },
 	{ "lat_ns_tot",   smp_fetch_lat_ns_tot, 0,       NULL, SMP_T_SINT, SMP_USE_INTRN },
 
-	{ "str",  smp_fetch_const_str,  ARG1(1,STR),  NULL                , SMP_T_STR,  SMP_USE_INTRN },
-	{ "bool", smp_fetch_const_bool, ARG1(1,STR),  smp_check_const_bool, SMP_T_BOOL, SMP_USE_INTRN },
-	{ "int",  smp_fetch_const_int,  ARG1(1,SINT), NULL                , SMP_T_SINT, SMP_USE_INTRN },
-	{ "ipv4", smp_fetch_const_ipv4, ARG1(1,IPV4), NULL                , SMP_T_IPV4, SMP_USE_INTRN },
-	{ "ipv6", smp_fetch_const_ipv6, ARG1(1,IPV6), NULL                , SMP_T_IPV6, SMP_USE_INTRN },
-	{ "bin",  smp_fetch_const_bin,  ARG1(1,STR),  smp_check_const_bin , SMP_T_BIN,  SMP_USE_INTRN },
-	{ "meth", smp_fetch_const_meth, ARG1(1,STR),  smp_check_const_meth, SMP_T_METH, SMP_USE_INTRN },
+	{ "str",  smp_fetch_const_str,  ARG1(1,STR),  NULL                , SMP_T_STR,  SMP_USE_CONST },
+	{ "bool", smp_fetch_const_bool, ARG1(1,STR),  smp_check_const_bool, SMP_T_BOOL, SMP_USE_CONST },
+	{ "int",  smp_fetch_const_int,  ARG1(1,SINT), NULL                , SMP_T_SINT, SMP_USE_CONST },
+	{ "ipv4", smp_fetch_const_ipv4, ARG1(1,IPV4), NULL                , SMP_T_IPV4, SMP_USE_CONST },
+	{ "ipv6", smp_fetch_const_ipv6, ARG1(1,IPV6), NULL                , SMP_T_IPV6, SMP_USE_CONST },
+	{ "bin",  smp_fetch_const_bin,  ARG1(1,STR),  smp_check_const_bin , SMP_T_BIN,  SMP_USE_CONST },
+	{ "meth", smp_fetch_const_meth, ARG1(1,STR),  smp_check_const_meth, SMP_T_METH, SMP_USE_CONST },
 
 	{ /* END */ },
 }};
diff --git a/src/vars.c b/src/vars.c
index e71d7f1c0..8690863e8 100644
--- a/src/vars.c
+++ b/src/vars.c
@@ -864,7 +864,7 @@ REGISTER_POST_DEINIT(vars_deinit);
 
 static struct sample_fetch_kw_list sample_fetch_keywords = {ILH, {
 
-	{ "var", smp_fetch_var, ARG1(1,STR), smp_check_var, SMP_T_STR, SMP_USE_INTRN },
+	{ "var", smp_fetch_var, ARG1(1,STR), smp_check_var, SMP_T_STR, SMP_USE_CONST },
 	{ /* END */ },
 }};