diff --git a/crates/carddav/src/addressbook/prop.rs b/crates/carddav/src/addressbook/prop.rs
index cfb236d..fe9a576 100644
--- a/crates/carddav/src/addressbook/prop.rs
+++ b/crates/carddav/src/addressbook/prop.rs
@@ -19,7 +19,7 @@ pub enum AddressbookProp {
     SupportedCollationSet(SupportedCollationSet),
     #[xml(ns = "rustical_dav::namespace::NS_DAV", skip_deserializing)]
     SupportedReportSet(SupportedReportSet<ReportMethod>),
-    #[xml(ns = "rustical_dav::namespace::NS_DAV")]
+    #[xml(ns = "rustical_dav::namespace::NS_CARDDAV")]
     MaxResourceSize(i64),
 }
 
diff --git a/crates/carddav/src/addressbook/snapshots/rustical_carddav__addressbook__tests__propfind-3.snap b/crates/carddav/src/addressbook/snapshots/rustical_carddav__addressbook__tests__propfind-3.snap
index a76413f..6b76654 100644
--- a/crates/carddav/src/addressbook/snapshots/rustical_carddav__addressbook__tests__propfind-3.snap
+++ b/crates/carddav/src/addressbook/snapshots/rustical_carddav__addressbook__tests__propfind-3.snap
@@ -28,7 +28,7 @@ expression: response.serialize_to_string().unwrap()
                     </report>
                 </supported-report>
             </supported-report-set>
-            <max-resource-size xmlns="DAV:">10000000</max-resource-size>
+            <max-resource-size xmlns="urn:ietf:params:xml:ns:carddav">10000000</max-resource-size>
             <sync-token xmlns="DAV:">github.com/lennart-k/rustical/ns/0</sync-token>
             <getctag xmlns="http://calendarserver.org/ns/">github.com/lennart-k/rustical/ns/0</getctag>
             <transports xmlns="https://bitfire.at/webdav-push">
diff --git a/src/integration_tests/carddav/snapshots/rustical__integration_tests__carddav__addressbook__propfind_body.snap b/src/integration_tests/carddav/snapshots/rustical__integration_tests__carddav__addressbook__propfind_body.snap
index 4f96942..901b803 100644
--- a/src/integration_tests/carddav/snapshots/rustical__integration_tests__carddav__addressbook__propfind_body.snap
+++ b/src/integration_tests/carddav/snapshots/rustical__integration_tests__carddav__addressbook__propfind_body.snap
@@ -30,7 +30,7 @@ expression: body
                         </report>
                     </supported-report>
                 </supported-report-set>
-                <max-resource-size>10000000</max-resource-size>
+                <CARD:max-resource-size>10000000</CARD:max-resource-size>
                 <sync-token>github.com/lennart-k/rustical/ns/0</sync-token>
                 <CS:getctag>github.com/lennart-k/rustical/ns/0</CS:getctag>
                 <PUSH:transports>