diff --git a/test/Makefile.am b/test/Makefile.am
index 4f4f9a1..fc6b72e 100644
--- a/test/Makefile.am
+++ b/test/Makefile.am
@@ -37,7 +37,8 @@
 check_PROGRAMS += ldap_mapper_test
 ldap_mapper_test_CPPFLAGS = $(cppflags)
 ldap_mapper_test_CXXFLAGS = $(cxxflags)
-ldap_mapper_test_LDFLAGS  = $(ldflags)
+ldap_mapper_test_LDFLAGS  = $(ldflags) \
+                            -lgmock
 ldap_mapper_test_SOURCES  = ldap_mapper_test.cpp
 ldap_mapper_test_LDADD  = $(top_builddir)/phosphor-ldap-mapper/ldap_mapper_entry.o \
                           $(top_builddir)/phosphor-ldap-mapper/ldap_mapper_mgr.o \
diff --git a/test/ldap_mapper_test.cpp b/test/ldap_mapper_test.cpp
index 9853c85..b3c1a4f 100644
--- a/test/ldap_mapper_test.cpp
+++ b/test/ldap_mapper_test.cpp
@@ -8,6 +8,7 @@
 #include <xyz/openbmc_project/Common/error.hpp>
 #include <xyz/openbmc_project/User/Common/error.hpp>
 #include "config.h"
+#include <sdbusplus/test/sdbus_mock.hpp>
 
 namespace phosphor
 {
@@ -19,7 +20,9 @@
 class TestSerialization : public testing::Test
 {
   public:
-    TestSerialization() : bus(sdbusplus::bus::new_default())
+    sdbusplus::SdBusMock sdbusMock;
+
+    TestSerialization() : bus(sdbusplus::get_mocked_new(&sdbusMock))
     {
     }
 
diff --git a/test/user_mgr_test.cpp b/test/user_mgr_test.cpp
index 83ae651..88911cd 100644
--- a/test/user_mgr_test.cpp
+++ b/test/user_mgr_test.cpp
@@ -3,6 +3,7 @@
 #include <xyz/openbmc_project/Common/error.hpp>
 #include <gtest/gtest.h>
 #include <exception>
+#include <sdbusplus/test/sdbus_mock.hpp>
 
 namespace phosphor
 {
@@ -17,11 +18,12 @@
 class TestUserMgr : public testing::Test
 {
   public:
+    sdbusplus::SdBusMock sdbusMock;
     sdbusplus::bus::bus bus;
     MockManager mockManager;
 
     TestUserMgr() :
-        bus(sdbusplus::bus::new_default()), mockManager(bus, objpath)
+        bus(sdbusplus::get_mocked_new(&sdbusMock)), mockManager(bus, objpath)
     {
     }