diff --git a/src/vulkan/util/gen_enum_to_str.py b/src/vulkan/util/gen_enum_to_str.py
index d4a7bb4830a..a2a04a29b5d 100644
--- a/src/vulkan/util/gen_enum_to_str.py
+++ b/src/vulkan/util/gen_enum_to_str.py
@@ -296,7 +296,7 @@ def compute_max_enum_name(s):
     max_enum_name = CamelCase_to_SHOUT_CASE(s)
     last_prefix = max_enum_name.rsplit('_', 1)[-1]
     # Those special prefixes need to be always at the end
-    if last_prefix in ['AMD', 'EXT', 'INTEL', 'KHR', 'NV', 'LUNARG', 'QCOM', 'MSFT', 'ARM'] :
+    if last_prefix in ['AMD', 'AMDX', 'EXT', 'INTEL', 'KHR', 'NV', 'LUNARG', 'QCOM', 'MSFT', 'ARM'] :
         max_enum_name = "_".join(max_enum_name.split('_')[:-1])
         max_enum_name = max_enum_name + "_MAX_ENUM_" + last_prefix
     else: