diff --git a/CMakeLists.txt b/CMakeLists.txt
index 5f83f19def..608795bf8d 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -233,6 +233,9 @@ if(IGL_WITH_IGLU)
 endif()
 if(APPLE AND IGL_WITH_METAL)
   target_compile_definitions(IGLLibrary PUBLIC "IGL_BACKEND_ENABLE_METAL=1")
+  if(NOT IGL_WITH_VULKAN)
+    target_sources(IGLLibrary PRIVATE "src/igl/vulkan/util/TextureFormat.cpp")
+  endif()
 endif()
 
 target_compile_definitions(IGLLibrary PUBLIC "IGL_CMAKE_BUILD=1")