diff --git a/swh/deposit/tests/api/test_checks.py b/swh/deposit/tests/api/test_checks.py
--- a/swh/deposit/tests/api/test_checks.py
+++ b/swh/deposit/tests/api/test_checks.py
@@ -178,6 +178,22 @@
             </entry>
             """,
         ),
+        (
+            "codemeta-affiliation",
+            f"""\
+            <entry {XMLNS}>
+                <url>some url</url>
+                <codemeta:name>bar</codemeta:name>
+                <codemeta:author>
+                    <codemeta:name>someone</codemeta:name>
+                    <codemeta:affiliation>
+                        <codemeta:name>My Orga</codemeta:name>
+                    </codemeta:affiliation>
+                </codemeta:author>
+                {PROVENANCE_XML}
+            </entry>
+            """,
+        ),
         (
             "swh:add_to_origin",
             f"""\
@@ -379,6 +395,26 @@
                 },
             ],
         ),
+        (
+            "chardata-in-affiliation",
+            f"""\
+            <entry {XMLNS}>
+                <url>some url</url>
+                <codemeta:name>bar</codemeta:name>
+                <codemeta:author>
+                    <codemeta:name>someone</codemeta:name>
+                    <codemeta:affiliation>My Orga</codemeta:affiliation>
+                </codemeta:author>
+                {PROVENANCE_XML}
+            </entry>
+            """,
+            [
+                {
+                    "summary": ".*Reason: character data between child elements.*",
+                    "fields": ["codemeta:author"],
+                },
+            ],
+        ),
         (
             "chardata-in-author",
             f"""\
diff --git a/swh/deposit/xsd/codemeta.xsd b/swh/deposit/xsd/codemeta.xsd
--- a/swh/deposit/xsd/codemeta.xsd
+++ b/swh/deposit/xsd/codemeta.xsd
@@ -32,5 +32,10 @@
     </xsd:all>
   </xsd:complexType>
 
+  <!-- note that codemeta:affiliation expects Organization as value,
+       but https://codemeta.github.io/terms/ mistakenly documents it as Text.
+       See https://github.com/codemeta/codemeta/pull/239 -->
+  <xsd:element name="affiliation" type="codemeta:PersonOrOrganization" />
+
   <xsd:element name="name" type="xsd:string" />
 </xsd:schema>