diff --git a/src/backend_task/identity/register_dpns_name.rs b/src/backend_task/identity/register_dpns_name.rs
index baee1f9c1..6b3df4036 100644
--- a/src/backend_task/identity/register_dpns_name.rs
+++ b/src/backend_task/identity/register_dpns_name.rs
@@ -125,10 +125,12 @@ impl AppContext {
 
         let public_key = qualified_identity
             .document_signing_key(&preorder_document_type)
-            .ok_or(
-                "Identity doesn't have an authentication key for signing document transitions"
-                    .to_string(),
-            )?;
+            .ok_or_else(|| {
+                format!(
+                    "Identity {} doesn't have an authentication key for signing document transitions",
+                    qualified_identity.display_string()
+                )
+            })?;
 
         // Estimate fees for DPNS registration (2 document batch transitions)
         let fee_estimator = PlatformFeeEstimator::new();
diff --git a/src/ui/identities/mod.rs b/src/ui/identities/mod.rs
index d582aa176..753ced629 100644
--- a/src/ui/identities/mod.rs
+++ b/src/ui/identities/mod.rs
@@ -78,8 +78,10 @@ pub fn get_selected_wallet(
         qualified_identity
             .document_signing_key(&preorder_document_type)
             .ok_or_else(|| {
-                "Identity doesn't have an authentication key for signing document transitions"
-                    .to_string()
+                format!(
+                    "Identity {} doesn't have an authentication key for signing document transitions",
+                    qualified_identity.display_string()
+                )
             })?
     } else {
         // Fallback: directly use the provided selected key.