diff --git a/src/ucp/core/ucp_rkey.c b/src/ucp/core/ucp_rkey.c
index 4fb99dfb1f7d..f988dcf0a454 100644
--- a/src/ucp/core/ucp_rkey.c
+++ b/src/ucp/core/ucp_rkey.c
@@ -15,8 +15,8 @@
 
 static struct {
     ucp_md_map_t md_map;
-    uint8_t mem_type;
-} UCS_S_PACKED ucp_mem_dummy_buffer = {0, 0};
+    uint8_t      mem_type;
+} UCS_S_PACKED ucp_mem_dummy_buffer = {0, UCT_MD_MEM_TYPE_HOST};
 
 
 size_t ucp_rkey_packed_size(ucp_context_h context, ucp_md_map_t md_map)
@@ -359,6 +359,7 @@ static ucp_lane_index_t ucp_config_find_rma_lane(ucp_context_h context,
     ucp_md_index_t md_index;
     uct_md_attr_t *md_attr;
     uint8_t rkey_index;
+    int valid_mem_type_lane;
     int prio;
 
     for (prio = 0; prio < UCP_MAX_LANES; ++prio) {
@@ -372,10 +373,12 @@ static ucp_lane_index_t ucp_config_find_rma_lane(ucp_context_h context,
         md_index = config->md_index[lane];
         md_attr  = &context->tl_mds[md_index].attr;
 
+        valid_mem_type_lane = (!rkey || ((md_attr->cap.mem_type == mem_type) &&
+                                         (md_attr->cap.mem_type == rkey->mem_type)));
+
         if ((md_index != UCP_NULL_RESOURCE) &&
             (!(md_attr->cap.flags & UCT_MD_FLAG_NEED_RKEY)) &&
-            (!rkey || (md_attr->cap.mem_type == mem_type &&
-                       md_attr->cap.mem_type == rkey->mem_type)))
+            (valid_mem_type_lane))
         {
             /* Lane does not need rkey, can use the lane with invalid rkey  */
             *uct_rkey_p = UCT_INVALID_RKEY;