diff --git a/projects/apis/metal/loader/metal_instance_loader.m b/projects/apis/metal/loader/metal_instance_loader.m
index 68d469b..73c6d14 100644
--- a/projects/apis/metal/loader/metal_instance_loader.m
+++ b/projects/apis/metal/loader/metal_instance_loader.m
@@ -8,7 +8,7 @@ gryphnInstanceFunctionLayers metalLoadAPILayer(void) {
         .createInstance = metalCreateInstance,
         .queryDevices = metalQueryDevices,
         .destroyInstance = metalDestroyInstance,
-        // .isSuitable = metalIsInstanceSuitable,
+        .isSuitable = metalIsInstanceSuitable,
         .getPhysicalDeviceProperties = metalQueryPhysicalDeviceProperties,
         .next = NULL
     };
diff --git a/projects/apis/metal/src/instance/metal_instance.h b/projects/apis/metal/src/instance/metal_instance.h
index e30068e..5cf05c2 100644
--- a/projects/apis/metal/src/instance/metal_instance.h
+++ b/projects/apis/metal/src/instance/metal_instance.h
@@ -9,4 +9,5 @@ typedef struct gnPlatformInstance_t {
 
 gnReturnCode metalCreateInstance(gnInstanceHandle instance, gnInstanceCreateInfo* instanceInfo, gryphnInstanceFunctionLayers* next, gnAllocators* allocators);
 gnReturnCode metalQueryDevices(gnInstanceHandle instance, uint32_t* count, gnPhysicalDeviceHandle* devices, gryphnInstanceFunctionLayers* next);
+gnBool metalIsInstanceSuitable(gnInstanceHandle instance, gnSuitableField field, gryphnInstanceFunctionLayers* next);
 void metalDestroyInstance(gnInstance instance, gryphnInstanceFunctionLayers* next, gnAllocators* allocators);
diff --git a/projects/apis/metal/src/instance/metal_instance.m b/projects/apis/metal/src/instance/metal_instance.m
index 51a42be..4cdaf31 100644
--- a/projects/apis/metal/src/instance/metal_instance.m
+++ b/projects/apis/metal/src/instance/metal_instance.m
@@ -17,6 +17,11 @@ gnReturnCode metalQueryDevices(gnInstanceHandle instance, uint32_t* count, gnPhy
         devices[i] = (uint64_t)metalDevices[i];
     return GN_SUCCESS;
 }
+gnBool metalIsInstanceSuitable(gnInstanceHandle instance, gnSuitableField field, gryphnInstanceFunctionLayers* next) {
+    switch (field) {
+    case GN_NON_EXISTANT_PHYSICAL_DEVICE: return GN_FALSE;
+    }
+}
 void metalDestroyInstance(gnInstanceHandle instance, gryphnInstanceFunctionLayers* next, gnAllocators* allocators) {
     if (next != NULL) return;
     allocators->free(instance->instance, allocators->userData);