diff --git a/src/vulkan/util/vk_physical_device_properties_gen.py b/src/vulkan/util/vk_physical_device_properties_gen.py
index 4b74047618c..11cde09c384 100644
--- a/src/vulkan/util/vk_physical_device_properties_gen.py
+++ b/src/vulkan/util/vk_physical_device_properties_gen.py
@@ -223,7 +223,7 @@ def get_property_structs(doc, api, beta):
 
         # Skip extensions with a define for now
         guard = required[full_name].guard
-        if guard is not None and (guard != "VK_ENABLE_BETA_EXTENSIONS" or not beta):
+        if guard is not None and (guard != "VK_ENABLE_BETA_EXTENSIONS" or beta != "true"):
             continue
 
         # find Vulkan structure type