diff --git a/orte/mca/odls/base/odls_base_default_fns.c b/orte/mca/odls/base/odls_base_default_fns.c
index f98dd7468b..9d2e42f8dd 100644
--- a/orte/mca/odls/base/odls_base_default_fns.c
+++ b/orte/mca/odls/base/odls_base_default_fns.c
@@ -431,7 +431,7 @@ int orte_odls_base_default_get_add_procs_data(opal_buffer_t *buffer,
     }
 
     /* get any application prep info */
-    if (orte_enable_instant_on_support && NULL != opal_pmix.server_setup_application) {
+    if (NULL != opal_pmix.server_setup_application) {
         /* we don't want to block here because it could
          * take some indeterminate time to get the info */
         if (OPAL_SUCCESS != (rc = opal_pmix.server_setup_application(jdata->jobid, NULL, setup_cbfunc, jdata))) {
@@ -798,8 +798,7 @@ int orte_odls_base_default_construct_child_list(opal_buffer_t *buffer,
     /* if we have local support setup info, then execute it here - we
      * have to do so AFTER we register the nspace so the PMIx server
      * has the nspace info it needs */
-    if (orte_enable_instant_on_support &&
-        0 < opal_list_get_size(&local_support) &&
+    if (0 < opal_list_get_size(&local_support) &&
         NULL != opal_pmix.server_setup_local_support) {
         if (OPAL_SUCCESS != (rc = opal_pmix.server_setup_local_support(jdata->jobid, &local_support,
                                                                        ls_cbunc, &lock))) {
diff --git a/orte/mca/schizo/ompi/schizo_ompi.c b/orte/mca/schizo/ompi/schizo_ompi.c
index 2b1763c29b..c6f5e008fe 100644
--- a/orte/mca/schizo/ompi/schizo_ompi.c
+++ b/orte/mca/schizo/ompi/schizo_ompi.c
@@ -509,12 +509,6 @@ static opal_cmd_line_init_t cmd_line_init[] = {
       "Forward mpirun port to compute node daemons so all will use it",
       OPAL_CMD_LINE_OTYPE_LAUNCH },
 
-    /* enable instant-on support */
-    { "orte_enable_instant_on_support", '\0', "enable-instant-on-support", "enable-instant-on-support", 0,
-      NULL, OPAL_CMD_LINE_TYPE_BOOL,
-      "Enable PMIx-based instant on launch support (experimental)",
-      OPAL_CMD_LINE_OTYPE_LAUNCH },
-
     /* End of list */
     { NULL, '\0', NULL, NULL, 0,
       NULL, OPAL_CMD_LINE_TYPE_NULL, NULL }
diff --git a/orte/runtime/orte_globals.c b/orte/runtime/orte_globals.c
index 4f043329d1..1f7fc2ec7f 100644
--- a/orte/runtime/orte_globals.c
+++ b/orte/runtime/orte_globals.c
@@ -205,9 +205,6 @@ char *orte_job_ident = NULL;
 bool orte_execute_quiet = false;
 bool orte_report_silent_errors = false;
 
-/* enable PMIx-based "instant on" support */
-bool orte_enable_instant_on_support = false;
-
 /* See comment in orte/tools/orterun/debuggers.c about this MCA
    param */
 bool orte_in_parallel_debugger = false;
diff --git a/orte/runtime/orte_globals.h b/orte/runtime/orte_globals.h
index 3c93c6dbe2..1ae4de3eee 100644
--- a/orte/runtime/orte_globals.h
+++ b/orte/runtime/orte_globals.h
@@ -588,9 +588,6 @@ ORTE_DECLSPEC extern char *orte_daemon_cores;
 /* Max time to wait for stack straces to return */
 ORTE_DECLSPEC extern int orte_stack_trace_wait_timeout;
 
-/* enable PMIx-based "instant on" support */
-ORTE_DECLSPEC extern bool orte_enable_instant_on_support;
-
 END_C_DECLS
 
 #endif /* ORTE_RUNTIME_ORTE_GLOBALS_H */
diff --git a/orte/runtime/orte_mca_params.c b/orte/runtime/orte_mca_params.c
index 0053a663e4..caf6b59dab 100644
--- a/orte/runtime/orte_mca_params.c
+++ b/orte/runtime/orte_mca_params.c
@@ -790,12 +790,5 @@ int orte_register_params(void)
                                   OPAL_INFO_LVL_3, MCA_BASE_VAR_SCOPE_ALL,
                                   &orte_data_server_uri);
 
-    orte_enable_instant_on_support = false;
-    (void) mca_base_var_register ("orte", "orte", NULL, "enable_instant_on_support",
-                                  "Enable PMIx-based instant on launch support (experimental)",
-                                  MCA_BASE_VAR_TYPE_BOOL, NULL, 0, 0,
-                                  OPAL_INFO_LVL_9, MCA_BASE_VAR_SCOPE_READONLY,
-                                  &orte_enable_instant_on_support);
-
     return ORTE_SUCCESS;
 }