diff --git a/test/test_apps/common/test_app_base.cpp b/test/test_apps/common/test_app_base.cpp
index 9db8775432..328e17a66c 100644
--- a/test/test_apps/common/test_app_base.cpp
+++ b/test/test_apps/common/test_app_base.cpp
@@ -167,18 +167,24 @@ class VulkanFunctions
             return true;
         }
         auto library_path = std::getenv("VULKAN_LIBRARY_PATH");
+#if defined(__linux__)
         if (library_path != nullptr)
         {
             std::cout << "looking in " << library_path << std::endl;
             library = dlopen(library_path, RTLD_NOW | RTLD_LOCAL);
-            std::cout << "found it? : " << library != nullptr << std::endl;
+            std::cout << "found it? : " << (library != nullptr) << std::endl;
         }
-#if defined(__linux__)
         if (!library)
             library = dlopen("libvulkan.so.1", RTLD_NOW | RTLD_LOCAL);
         if (!library)
             library = dlopen("libvulkan.so", RTLD_NOW | RTLD_LOCAL);
 #elif defined(__APPLE__)
+        if (library_path != nullptr)
+        {
+            std::cout << "looking in " << library_path << std::endl;
+            library = dlopen(library_path, RTLD_NOW | RTLD_LOCAL);
+            std::cout << "found it? : " << (library != nullptr) << std::endl;
+        }
         std::cout << "looking for apple libvulkan" << std::endl;
         if (!library)
             library = dlopen("libvulkan.dylib", RTLD_NOW | RTLD_LOCAL);
@@ -187,6 +193,12 @@ class VulkanFunctions
         if (!library)
             library = dlopen("libMoltenVK.dylib", RTLD_NOW | RTLD_LOCAL);
 #elif defined(_WIN32)
+        if (library_path != nullptr)
+        {
+            std::cout << "looking in " << library_path << std::endl;
+            library = LoadLibrary(library_path);
+            std::cout << "found it? : " << (library != nullptr) << std::endl;
+        }
         if (!library)
             library = LoadLibrary(TEXT("vulkan-1.dll"));
 #else