diff --git a/xml/cl.xml b/xml/cl.xml
index 2e743e761..7f77943cc 100644
--- a/xml/cl.xml
+++ b/xml/cl.xml
@@ -4429,6 +4429,7 @@ server's OpenCL/api-docs repository.
             <type name="cl_sampler"/>
             <type name="cl_bool" comment="WARNING! Unlike cl_ types in cl_platform.h, cl_bool is not guaranteed to be the same size as the bool in kernels."/>
             <type name="cl_bitfield"/>
+            <type name="cl_properties"/>
             <type name="cl_device_type"/>
             <type name="cl_platform_info"/>
             <type name="cl_device_info"/>