Add include_directories to CMake to include the header files.
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 3c323ce..eb1e124 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -3,6 +3,7 @@
 project(VulkanMemoryAllocator)
 
 find_package(Vulkan REQUIRED)
+include_directories(${Vulkan_INCLUDE_DIR})
 
 # VulkanMemoryAllocator contains an sample application and VmaReplay which are not build by default
 option(VMA_BUILD_SAMPLE "Build VulkanMemoryAllocator sample application" OFF)