diff --git a/unstable/wlr-output-management-unstable-v1.xml b/unstable/wlr-output-management-unstable-v1.xml
index a8f4718..bc630b1 100644
--- a/unstable/wlr-output-management-unstable-v1.xml
+++ b/unstable/wlr-output-management-unstable-v1.xml
@@ -268,9 +268,6 @@
       <description summary="head manufacturer">
         This event describes the manufacturer of the head.
 
-        This must report the same make as the wl_output interface does in its
-        geometry event.
-
         Together with the model and serial_number events the purpose is to
         allow clients to recognize heads from previous sessions and for example
         load head-specific configurations back.
@@ -296,9 +293,6 @@
       <description summary="head model">
         This event describes the model of the head.
 
-        This must report the same model as the wl_output interface does in its
-        geometry event.
-
         Together with the make and serial_number events the purpose is to
         allow clients to recognize heads from previous sessions and for example
         load head-specific configurations back.