diff --git a/physical_device.cpp b/physical_device.cpp
index 30df6ed..b6ee8e3 100644
--- a/physical_device.cpp
+++ b/physical_device.cpp
@@ -84,14 +84,9 @@ physical_device::memory_properties (void) const
 std::vector<VkQueueFamilyProperties>
 physical_device::queue_families (void) const
 {
-    uint32_t count = 0;
-    vkGetPhysicalDeviceQueueFamilyProperties (native (), &count, nullptr);
-
-    std::vector<VkQueueFamilyProperties> values (count);
-    vkGetPhysicalDeviceQueueFamilyProperties (native (), &count, values.data ());
-
-    values.resize (count);
-    return values;
+    return error::try_array (
+        vkGetPhysicalDeviceQueueFamilyProperties, native ()
+    );
 }