diff --git a/NEWS b/NEWS
index a7601ff8a58..c34f677b84b 100644
--- a/NEWS
+++ b/NEWS
@@ -7,7 +7,7 @@
 ##
 #
 
-## 1.6.0-rc2 (June 13, 2019)
+## 1.6.0-rc3 (June 19, 2019)
 Features:
 - Modular architecture for UCT transports
 - ROCm transport re-design: support for managed memory, direct copy, ROCm GDR
@@ -33,6 +33,8 @@ Bugfixes:
 - Fix data race in UCP proxy endpoint
 - Static checker fixes
 - Fallback to ibv_create_cq() if ibv_create_cq_ex() returns ENOSYS
+- Fix malloc hooks test
+- Fix checking return status in ucp_client_server example
 
 Tested configurations:
 - RDMA: MLNX_OFED 4.5, distribution inbox drivers, rdma-core 22.1
diff --git a/test/gtest/ucm/malloc_hook.cc b/test/gtest/ucm/malloc_hook.cc
index a9e7f4ab316..3ee1324aa9a 100644
--- a/test/gtest/ucm/malloc_hook.cc
+++ b/test/gtest/ucm/malloc_hook.cc
@@ -1021,7 +1021,7 @@ UCS_TEST_F(malloc_hook, test_event_failed) {
     status = ucm_test_events(UCM_EVENT_VM_UNMAPPED);
     EXPECT_TRUE(status == UCS_ERR_UNSUPPORTED);
 
-    /* restore original mmap body */
+    /* restore original munmap body */
     status = ucm_bistro_restore(rp);
     ASSERT_UCS_OK(status);
 }
@@ -1040,7 +1040,7 @@ UCS_TEST_F(malloc_hook, test_event_unmap) {
         UCS_TEST_SKIP_R("skipping on non-BISTRO hooks");
     }
 
-    status = event.set(UCM_EVENT_MUNMAP);
+    status = event.set(UCM_EVENT_MMAP | UCM_EVENT_MUNMAP | UCM_EVENT_VM_UNMAPPED);
     ASSERT_UCS_OK(status);
 
     /* set hook to mmap call */
@@ -1048,13 +1048,19 @@ UCS_TEST_F(malloc_hook, test_event_unmap) {
     ASSERT_UCS_OK(status);
     EXPECT_NE((intptr_t)rp, NULL);
 
+    /* munmap should be broken */
     status = ucm_test_events(UCM_EVENT_MUNMAP);
     EXPECT_TRUE(status == UCS_ERR_UNSUPPORTED);
 
-    status = ucm_test_events(UCM_EVENT_VM_UNMAPPED);
+    /* vm_unmap should be broken as well, because munmap is broken */
+    status = ucm_test_events(UCM_EVENT_MUNMAP);
+    EXPECT_TRUE(status == UCS_ERR_UNSUPPORTED);
+
+    /* mmap should still work */
+    status = ucm_test_events(UCM_EVENT_MMAP);
     EXPECT_TRUE(status == UCS_OK);
 
-    /* restore original mmap body */
+    /* restore original munmap body */
     status = ucm_bistro_restore(rp);
     ASSERT_UCS_OK(status);
 }