diff --git a/util/test/demos/vk/vk_descriptor_index.cpp b/util/test/demos/vk/vk_descriptor_index.cpp
index c36a7a7c6..95e236bfe 100644
--- a/util/test/demos/vk/vk_descriptor_index.cpp
+++ b/util/test/demos/vk/vk_descriptor_index.cpp
@@ -225,6 +225,20 @@ void main()
 
     VulkanGraphicsTest::Prepare(argc, argv);
 
+    if(!Avail.empty())
+      return;
+
+    VkPhysicalDeviceProperties props;
+    vkGetPhysicalDeviceProperties(phys, &props);
+
+    // lazy - we could reduce this limit to a couple by not using combined image samplers
+    if(props.limits.maxDescriptorSetSamplers < DESC_ARRAY1_SIZE + DESC_ARRAY2_SIZE)
+      Avail = "maxDescriptorSetSamplers " + std::to_string(props.limits.maxDescriptorSetSamplers) +
+              " is insufficient";
+    else if(props.limits.maxDescriptorSetSampledImages < DESC_ARRAY1_SIZE + DESC_ARRAY2_SIZE)
+      Avail = "maxDescriptorSetSampledImages " +
+              std::to_string(props.limits.maxDescriptorSetSampledImages) + " is insufficient";
+
     if(!Avail.empty())
       return;