diff --git a/generate_protos.py b/generate_protos.py
index e8a31cd..45b5dc2 100755
--- a/generate_protos.py
+++ b/generate_protos.py
@@ -16,6 +16,7 @@ template = Template('''#pragma once
 // https://github.com/justinian/j6-uefi-headers for more information.
 
 #include <uefi/guid.h>
+#include <uefi/types.h>
 {%- for header in headers %}
 #include <{{ header }}>
 {%- endfor %}
diff --git a/protos.yaml b/protos.yaml
index 4d1475f..1f8313f 100644
--- a/protos.yaml
+++ b/protos.yaml
@@ -1,5 +1,7 @@
 - name: loaded_image
   guid: "0x5b1b31a1,0x9562,0x11d2,{0x8e,0x3f,0x00,0xa0,0xc9,0x69,0x72,0x3b}"
+  headers:
+    - uefi/tables.h
   pre_data:
     - name: revision
       type: uint32_t