diff --git a/CMakeLists.txt b/CMakeLists.txt
index 31248da4..01a7c47e 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -352,7 +352,8 @@ target_link_libraries(uv_a ${uv_libraries})
 if(BUILD_TESTING)
   include(CTest)
   add_executable(uv_run_tests ${uv_test_sources})
-  target_compile_definitions(uv_run_tests PRIVATE ${uv_defines})
+  target_compile_definitions(uv_run_tests
+                             PRIVATE ${uv_defines} USING_UV_SHARED=1)
   target_compile_options(uv_run_tests PRIVATE ${uv_cflags})
   target_include_directories(uv_run_tests PRIVATE include)
   target_link_libraries(uv_run_tests uv ${uv_test_libraries})