diff --git a/src/mapi/glapi/gen/NV_vdpau_interop.xml b/src/mapi/glapi/gen/NV_vdpau_interop.xml
index 7bf8fdfb4f1..1f53ac4a025 100644
--- a/src/mapi/glapi/gen/NV_vdpau_interop.xml
+++ b/src/mapi/glapi/gen/NV_vdpau_interop.xml
@@ -50,12 +50,12 @@
 	<param name="access" type="GLenum"/>
     </function>
 
-    <function name="VDPAUMapSurfacesNV">
+    <function name="VDPAUMapSurfacesNV" marshal="sync">
 	<param name="numSurfaces" type="GLsizei"/>
 	<param name="surfaces" type="const GLintptr *" count="numSurfaces"/>
     </function>
 
-    <function name="VDPAUUnmapSurfacesNV">
+    <function name="VDPAUUnmapSurfacesNV" marshal="sync">
 	<param name="numSurfaces" type="GLsizei"/>
 	<param name="surfaces" type="const GLintptr *" count="numSurfaces"/>
     </function>