diff --git a/src/core/net/srp_advertising_proxy.cpp b/src/core/net/srp_advertising_proxy.cpp
index b40abf408..f75d9ca70 100644
--- a/src/core/net/srp_advertising_proxy.cpp
+++ b/src/core/net/srp_advertising_proxy.cpp
@@ -1152,7 +1152,10 @@ void AdvertisingProxy::UnregisterKey(const char *aName, const char *aServiceType
 
 void AdvertisingProxy::CopyNameAndRemoveDomain(DnsName &aName, const char *aFullName)
 {
-    IgnoreError(Dns::Name::ExtractLabels(aFullName, Get<Server>().GetDomain(), aName, sizeof(aName)));
+    if (Dns::Name::ExtractLabels(aFullName, Get<Server>().GetDomain(), aName, sizeof(aName)) != kErrorNone)
+    {
+        aName[0] = kNullChar;
+    }
 }
 
 void AdvertisingProxy::HandleRegistered(otInstance *aInstance, otPlatDnssdRequestId aRequestId, otError aError)