diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
index 60b7a4dba..a2e53dda1 100644
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -43,24 +43,30 @@ if (GTest_FOUND)
   include_directories(SYSTEM ${GTEST_INCLUDE_DIRS})
 else ()
   message(STATUS "GTest not found on the system: will use GTest bundled with this source")
-  add_subdirectory(gtest)
-  include_directories(SYSTEM "${gtest_SOURCE_DIR}/include" "${gtest_SOURCE_DIR}")
 
-  # Emulate the FindGTest module's variable.
-  set(GTEST_LIBRARIES gtest)
-
-  # Ignore some warnings when building gtest binaries.
-  if(NOT MSVC)
-    set_property(TARGET gtest
-      APPEND_STRING
-      PROPERTY
-        COMPILE_FLAGS " -Wno-undef -Wno-sign-compare")
-  endif()
+  include(ExternalProject)
+  ExternalProject_Add(googletest
+    SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/gtest
+    BINARY_DIR ${CMAKE_CURRENT_BINARY_DIR}/gtest
+    DOWNLOAD_COMMAND ""
+    UPDATE_COMMAND ""
+    INSTALL_COMMAND ""
+  )
+  add_library(gtest      UNKNOWN IMPORTED)
+  add_library(gtest_main UNKNOWN IMPORTED)
+  set_target_properties(gtest PROPERTIES
+    IMPORTED_LOCATION ${CMAKE_CURRENT_BINARY_DIR}/gtest/libgtest.a
+  )
+  set_target_properties(gtest_main PROPERTIES
+    IMPORTED_LOCATION ${CMAKE_CURRENT_BINARY_DIR}/gtest/libgtest_main.a
+  )
+  add_dependencies(gtest      googletest)
+  add_dependencies(gtest_main googletest)
 
-  set_property(TARGET gtest
-      PROPERTY
-        FOLDER "${folder}")
-endif ()
+  # Emulate the FindGTest module's variable.
+  set(GTEST_LIBRARIES gtest gtest_main)
+  include_directories(SYSTEM "${CMAKE_CURRENT_SOURCE_DIR}/gtest/include")
+endif (GTest_FOUND)
 
 file(COPY
   data/wallet_9svHk1.keys