diff --git a/src/panfrost/lib/genxml/v9.xml b/src/panfrost/lib/genxml/v9.xml
index bf307a0c8be..523548adf79 100644
--- a/src/panfrost/lib/genxml/v9.xml
+++ b/src/panfrost/lib/genxml/v9.xml
@@ -721,7 +721,7 @@
   <struct name="Shader Program" align="32">
     <field name="Type" size="4" start="0:0" type="Descriptor Type" default="Shader"/>
     <field name="Stage" size="4" start="0:4" type="Shader stage"/>
-    <field name="Primary shader" size="8" start="0:8" type="uint"/>
+    <field name="Primary shader" size="1" start="0:8" type="bool"/>
     <!-- XXX DDK sets/clears these together, so I might have them backward -->
     <field name="Suppress Inf" size="1" start="0:16" type="bool"/>
     <field name="Suppress NaN" size="1" start="0:19" type="bool"/>