diff --git a/opal/mca/pmix/cray/pmix_cray.c b/opal/mca/pmix/cray/pmix_cray.c
index 6673259875..0b6d9d7813 100644
--- a/opal/mca/pmix/cray/pmix_cray.c
+++ b/opal/mca/pmix/cray/pmix_cray.c
@@ -314,8 +314,8 @@ static int cray_init(void)
     /* save the local size */
     OBJ_CONSTRUCT(&kv, opal_value_t);
     kv.key = strdup(OPAL_PMIX_LOCAL_SIZE);
-    kv.type = OPAL_UINT16;
-    kv.data.uint16 = pmix_nlranks;
+    kv.type = OPAL_UINT32;
+    kv.data.uint32 = pmix_nlranks;
     if (OPAL_SUCCESS != (rc = opal_pmix_base_store(&OPAL_PROC_MY_NAME, &kv))) {
         OPAL_ERROR_LOG(rc);
         OBJ_DESTRUCT(&kv);
diff --git a/opal/mca/pmix/s1/pmix_s1.c b/opal/mca/pmix/s1/pmix_s1.c
index 60ba28947e..3a82f6ee00 100644
--- a/opal/mca/pmix/s1/pmix_s1.c
+++ b/opal/mca/pmix/s1/pmix_s1.c
@@ -274,8 +274,8 @@ static int s1_init(void)
     /* save the local size */
     OBJ_CONSTRUCT(&kv, opal_value_t);
     kv.key = strdup(OPAL_PMIX_LOCAL_SIZE);
-    kv.type = OPAL_UINT16;
-    kv.data.uint16 = nlranks;
+    kv.type = OPAL_UINT32;
+    kv.data.uint32 = nlranks;
     if (OPAL_SUCCESS != (ret = opal_pmix_base_store(&OPAL_PROC_MY_NAME, &kv))) {
         OPAL_ERROR_LOG(ret);
         OBJ_DESTRUCT(&kv);
diff --git a/opal/mca/pmix/s2/pmix_s2.c b/opal/mca/pmix/s2/pmix_s2.c
index 97871afb2d..9dd6d9c2ca 100644
--- a/opal/mca/pmix/s2/pmix_s2.c
+++ b/opal/mca/pmix/s2/pmix_s2.c
@@ -320,8 +320,8 @@ static int s2_init(void)
     /* save the local size */
     OBJ_CONSTRUCT(&kv, opal_value_t);
     kv.key = strdup(OPAL_PMIX_LOCAL_SIZE);
-    kv.type = OPAL_UINT16;
-    kv.data.uint16 = s2_nlranks;
+    kv.type = OPAL_UINT32;
+    kv.data.uint32 = s2_nlranks;
     if (OPAL_SUCCESS != (rc = opal_pmix_base_store(&OPAL_PROC_MY_NAME, &kv))) {
         OPAL_ERROR_LOG(rc);
         OBJ_DESTRUCT(&kv);