diff --git a/layers/spec.py b/layers/spec.py
index 671bd27..0ee4e56 100644
--- a/layers/spec.py
+++ b/layers/spec.py
@@ -182,7 +182,9 @@
         file_contents = []
         file_contents.append(self.copyright)
         file_contents.append('\n#pragma once')
-        file_contents.append('#include <unordered_map>')
+        file_contents.append('\n// Disable auto-formatting for generated file')
+        file_contents.append('// clang-format off')
+        file_contents.append('\n#include <unordered_map>')
         file_contents.append('\n// enum values for unique validation error codes')
         file_contents.append('//  Corresponding validation error message for each enum is given in the mapping table below')
         file_contents.append('//  When a given error occurs, these enum values should be passed to the as the messageCode')
@@ -572,4 +574,4 @@
 #<em class="parameter"><code>flags</code></em> <span class="normative">must</span> be <code class="literal">0</code>
 #</li><li class="listitem">
 #<em class="parameter"><code>pQueueCreateInfos</code></em> <span class="normative">must</span> be a pointer to an array of <em class="parameter"><code>queueCreateInfoCount</code></em> valid <code class="code">VkDeviceQueueCreateInfo</code> structures
-#</li>
\ No newline at end of file
+#</li>