diff --git a/include/vulkan.h b/include/vulkan.h
index 0fa2bc5..6629237 100644
--- a/include/vulkan.h
+++ b/include/vulkan.h
@@ -1690,6 +1690,7 @@
     VkStructureType                             sType;
     const void*                                 pNext;
     VkBool32                                    alphaToCoverageEnable;
+    VkBool32                                    alphaToOneEnable;
     VkBool32                                    logicOpEnable;
     VkLogicOp                                   logicOp;
     uint32_t                                    attachmentCount;