diff --git a/oshmem/mca/atomic/ucx/Makefile.am b/oshmem/mca/atomic/ucx/Makefile.am
index d922456e72..a350eb02f3 100644
--- a/oshmem/mca/atomic/ucx/Makefile.am
+++ b/oshmem/mca/atomic/ucx/Makefile.am
@@ -35,7 +35,8 @@ mcacomponentdir = $(ompilibdir)
 mcacomponent_LTLIBRARIES = $(component_install)
 mca_atomic_ucx_la_SOURCES = $(ucx_sources)
 mca_atomic_ucx_la_LIBADD = $(top_builddir)/oshmem/liboshmem.la \
-	$(atomic_ucx_LIBS)
+	$(atomic_ucx_LIBS) \
+	$(OPAL_TOP_BUILDDIR)/opal/mca/common/ucx/lib@OPAL_LIB_PREFIX@mca_common_ucx.la
 mca_atomic_ucx_la_LDFLAGS = -module -avoid-version $(atomic_ucx_LDFLAGS)
 
 noinst_LTLIBRARIES = $(component_noinst)
diff --git a/oshmem/mca/atomic/ucx/atomic_ucx_cswap.c b/oshmem/mca/atomic/ucx/atomic_ucx_cswap.c
index f6740f3897..1dbef56a2b 100644
--- a/oshmem/mca/atomic/ucx/atomic_ucx_cswap.c
+++ b/oshmem/mca/atomic/ucx/atomic_ucx_cswap.c
@@ -37,7 +37,7 @@ int mca_atomic_ucx_cswap_inner(void *target,
     uint64_t cmp;
 
     val = (4 == nlong) ? *(uint32_t*)value : *(uint64_t*)value;
-    ucx_mkey = mca_spml_ucx_get_mkey(pe, target, (void *)&rva); 
+    ucx_mkey = mca_spml_ucx_get_mkey(pe, target, (void *)&rva, mca_spml_self);
     if (NULL == cond) {
         status_ptr = ucp_atomic_fetch_nb(mca_spml_self->ucp_peers[pe].ucp_conn,
                                          UCP_ATOMIC_FETCH_OP_SWAP, val, prev, nlong,
diff --git a/oshmem/mca/atomic/ucx/atomic_ucx_fadd.c b/oshmem/mca/atomic/ucx/atomic_ucx_fadd.c
index f92c53ed22..37d8be0974 100644
--- a/oshmem/mca/atomic/ucx/atomic_ucx_fadd.c
+++ b/oshmem/mca/atomic/ucx/atomic_ucx_fadd.c
@@ -40,7 +40,7 @@ int mca_atomic_ucx_fadd(void *target,
         return OSHMEM_ERROR;
     }
 
-    ucx_mkey = mca_spml_ucx_get_mkey(pe, target, (void *)&rva);
+    ucx_mkey = mca_spml_ucx_get_mkey(pe, target, (void *)&rva, mca_spml_self);
     if (NULL == prev) {
         status = ucp_atomic_post(mca_spml_self->ucp_peers[pe].ucp_conn, 
                                  UCP_ATOMIC_POST_OP_ADD, val, nlong, rva,
diff --git a/oshmem/mca/spml/ucx/spml_ucx.c b/oshmem/mca/spml/ucx/spml_ucx.c
index b549357b12..c9068fafad 100644
--- a/oshmem/mca/spml/ucx/spml_ucx.c
+++ b/oshmem/mca/spml/ucx/spml_ucx.c
@@ -44,6 +44,9 @@
 #define SPML_UCX_PUT_DEBUG    0
 #endif
 
+static
+spml_ucx_mkey_t * mca_spml_ucx_get_mkey_slow(int pe, void *va, void **rva);
+
 mca_spml_ucx_t mca_spml_ucx = {
     {
         /* Init mca_spml_base_module_t */
@@ -75,7 +78,9 @@ mca_spml_ucx_t mca_spml_ucx = {
     NULL,   /* ucp_peers */
     0,      /* using_mem_hooks */
     1,      /* num_disconnect */
-    0       /* heap_reg_nb */
+    0,      /* heap_reg_nb */
+    0,      /* enabled */
+    mca_spml_ucx_get_mkey_slow
 };
 
 int mca_spml_ucx_enable(bool enable)
@@ -330,6 +335,7 @@ error:
 }
 
 
+static
 spml_ucx_mkey_t * mca_spml_ucx_get_mkey_slow(int pe, void *va, void **rva)
 {
     sshmem_mkey_t *r_mkey;
@@ -555,7 +561,7 @@ int mca_spml_ucx_get(void *src_addr, size_t size, void *dst_addr, int src)
     ucs_status_t status;
     spml_ucx_mkey_t *ucx_mkey;
 
-    ucx_mkey = mca_spml_ucx_get_mkey(src, src_addr, &rva);
+    ucx_mkey = mca_spml_ucx_get_mkey(src, src_addr, &rva, &mca_spml_ucx);
     status = ucp_get(mca_spml_ucx.ucp_peers[src].ucp_conn, dst_addr, size,
                      (uint64_t)rva, ucx_mkey->rkey);
 
@@ -568,7 +574,7 @@ int mca_spml_ucx_get_nb(void *src_addr, size_t size, void *dst_addr, int src, vo
     ucs_status_t status;
     spml_ucx_mkey_t *ucx_mkey;
 
-    ucx_mkey = mca_spml_ucx_get_mkey(src, src_addr, &rva);
+    ucx_mkey = mca_spml_ucx_get_mkey(src, src_addr, &rva, &mca_spml_ucx);
     status = ucp_get_nbi(mca_spml_ucx.ucp_peers[src].ucp_conn, dst_addr, size,
                      (uint64_t)rva, ucx_mkey->rkey);
 
@@ -581,7 +587,7 @@ int mca_spml_ucx_put(void* dst_addr, size_t size, void* src_addr, int dst)
     ucs_status_t status;
     spml_ucx_mkey_t *ucx_mkey;
 
-    ucx_mkey = mca_spml_ucx_get_mkey(dst, dst_addr, &rva);
+    ucx_mkey = mca_spml_ucx_get_mkey(dst, dst_addr, &rva, &mca_spml_ucx);
     status = ucp_put(mca_spml_ucx.ucp_peers[dst].ucp_conn, src_addr, size,
                      (uint64_t)rva, ucx_mkey->rkey);
 
@@ -594,7 +600,7 @@ int mca_spml_ucx_put_nb(void* dst_addr, size_t size, void* src_addr, int dst, vo
     ucs_status_t status;
     spml_ucx_mkey_t *ucx_mkey;
 
-    ucx_mkey = mca_spml_ucx_get_mkey(dst, dst_addr, &rva);
+    ucx_mkey = mca_spml_ucx_get_mkey(dst, dst_addr, &rva, &mca_spml_ucx);
     status = ucp_put_nbi(mca_spml_ucx.ucp_peers[dst].ucp_conn, src_addr, size,
                      (uint64_t)rva, ucx_mkey->rkey);
 
diff --git a/oshmem/mca/spml/ucx/spml_ucx.h b/oshmem/mca/spml/ucx/spml_ucx.h
index b57850414b..4aeed1481f 100644
--- a/oshmem/mca/spml/ucx/spml_ucx.h
+++ b/oshmem/mca/spml/ucx/spml_ucx.h
@@ -58,6 +58,8 @@ struct ucp_peer {
 };
 typedef struct ucp_peer ucp_peer_t;
 
+typedef spml_ucx_mkey_t * (*mca_spml_ucx_get_mkey_slow_fn_t)(int pe, void *va, void **rva);
+
 struct mca_spml_ucx {
     mca_spml_base_module_t   super;
     ucp_context_h            ucp_context;
@@ -68,6 +70,8 @@ struct mca_spml_ucx {
 
     int                      priority; /* component priority */
     bool                     enabled;
+
+    mca_spml_ucx_get_mkey_slow_fn_t get_mkey_slow;
 };
 typedef struct mca_spml_ucx mca_spml_ucx_t;
 
@@ -121,17 +125,16 @@ extern int mca_spml_ucx_quiet(void);
 extern int spml_ucx_progress(void);
 
 
-spml_ucx_mkey_t * mca_spml_ucx_get_mkey_slow(int pe, void *va, void **rva);
-
 static inline spml_ucx_mkey_t * 
-mca_spml_ucx_get_mkey(int pe, void *va, void **rva)
+mca_spml_ucx_get_mkey(int pe, void *va, void **rva, mca_spml_ucx_t* module)
 {
     spml_ucx_cached_mkey_t *mkey;
 
-    mkey = mca_spml_ucx.ucp_peers[pe].mkeys;
+    mkey = module->ucp_peers[pe].mkeys;
     mkey = (spml_ucx_cached_mkey_t *)map_segment_find_va(&mkey->super.super, sizeof(*mkey), va);
     if (OPAL_UNLIKELY(NULL == mkey)) {
-        return mca_spml_ucx_get_mkey_slow(pe, va, rva);
+        assert(module->get_mkey_slow);
+        return module->get_mkey_slow(pe, va, rva);
     }
     *rva = map_segment_va2rva(&mkey->super, va);
     return &mkey->key;