diff --git a/unittests/CppInterOp/CMakeLists.txt b/unittests/CppInterOp/CMakeLists.txt
index 5c66d237b..9fe465428 100644
--- a/unittests/CppInterOp/CMakeLists.txt
+++ b/unittests/CppInterOp/CMakeLists.txt
@@ -28,10 +28,6 @@ target_link_libraries(DynamicLibraryManagerTests
   clangCppInterOp
   )
 
-target_compile_definitions(DynamicLibraryManagerTests
-  PRIVATE CPPINTEROP_LIB_TestSharedLib_DIR_PREFIX=${CMAKE_BINARY_DIR}/unittests/bin/$<CONFIG>/
-)
-
 set_output_directory(DynamicLibraryManagerTests BINARY_DIR ${CMAKE_BINARY_DIR}/unittests/bin/$<CONFIG>/)
 
 add_dependencies(DynamicLibraryManagerTests TestSharedLib)
diff --git a/unittests/CppInterOp/DynamicLibraryManagerTest.cpp b/unittests/CppInterOp/DynamicLibraryManagerTest.cpp
index 816f83c9c..ee735eb96 100644
--- a/unittests/CppInterOp/DynamicLibraryManagerTest.cpp
+++ b/unittests/CppInterOp/DynamicLibraryManagerTest.cpp
@@ -7,9 +7,6 @@
 
 #include "../../lib/Interpreter/Paths.h"
 
-#define XCPP_INTEROP_STRINGIFY(x) #x
-#define CPP_INTEROP_STRINGIFY(x) XCPP_INTEROP_STRINGIFY(x)
-
 // This function isn't referenced outside its translation unit, but it
 // can't use the "static" keyword because its address is used for
 // GetMainExecutable (since some platforms don't support taking the
@@ -62,23 +59,15 @@ TEST(DynamicLibraryManagerTest, Sanity) {
 
 TEST(UtilsPlatform, DLTest) {
   std::string err = "";
-  // CPPINTEROP_LIB_TestSharedLib_DIR_PREFIX specified by cmake though target
-  // definitions
 #if defined(__APPLE__)
-  auto dlopen_handle = Cpp::utils::platform::DLOpen(
-      CPP_INTEROP_STRINGIFY(
-          CPPINTEROP_LIB_TestSharedLib_DIR_PREFIX) "./libTestSharedLib.dylib",
-      err);
+  auto dlopen_handle =
+      Cpp::utils::platform::DLOpen("./libTestSharedLib.dylib", err);
 #elif defined(_WIN32)
-  auto dlopen_handle = Cpp::utils::platform::DLOpen(
-      CPP_INTEROP_STRINGIFY(
-          CPPINTEROP_LIB_TestSharedLib_DIR_PREFIX) "./libTestSharedLib.dll",
-      err);
+  auto dlopen_handle =
+      Cpp::utils::platform::DLOpen("./libTestSharedLib.dll", err);
 #else
-  auto dlopen_handle = Cpp::utils::platform::DLOpen(
-      CPP_INTEROP_STRINGIFY(
-          CPPINTEROP_LIB_TestSharedLib_DIR_PREFIX) "./libTestSharedLib.so",
-      err);
+  auto dlopen_handle =
+      Cpp::utils::platform::DLOpen("./libTestSharedLib.so", err);
 #endif
   EXPECT_TRUE(dlopen_handle);
   EXPECT_TRUE(err.empty());