diff --git a/doc/src/sgml/func.sgml b/doc/src/sgml/func.sgml
index 53565075ca7..4d6061a8458 100644
--- a/doc/src/sgml/func.sgml
+++ b/doc/src/sgml/func.sgml
@@ -17345,7 +17345,7 @@ ERROR:  value too long for type character(2)
         <indexterm>
          <primary>json_strip_nulls</primary>
         </indexterm>
-        <function>json_strip_nulls</function> ( <parameter>target</parameter> <type>jsonb</type> <optional>,<parameter>strip_in_arrays</parameter> <type>boolean</type> </optional> )
+        <function>json_strip_nulls</function> ( <parameter>target</parameter> <type>json</type> <optional>,<parameter>strip_in_arrays</parameter> <type>boolean</type> </optional> )
         <returnvalue>json</returnvalue>
        </para>
        <para role="func_signature">