diff --git a/pr/create-without-user-activation/pr.js b/pr/create-without-user-activation/pr.js
index 533d40d..4163b17 100644
--- a/pr/create-without-user-activation/pr.js
+++ b/pr/create-without-user-activation/pr.js
@@ -19,7 +19,7 @@ async function createCredentialInner(residentKey, requireResidentKey) {
     // (e.g., the Passkeys UX on Chrome MacOS 108+). This is for display ONLY,
     // and has no bearing on SPC's functionality in general. (For example, it
     // is NOT shown in the SPC transaction dialog.)
-    name: 'Demo User on ' + window.location.hostname,
+    name: 'Demo User',
     displayName: '',
     id: Uint8Array.from(userId, c => c.charCodeAt(0)),
   }
diff --git a/pr/spc-cc/pr.js b/pr/spc-cc/pr.js
index 70117f3..9967961 100644
--- a/pr/spc-cc/pr.js
+++ b/pr/spc-cc/pr.js
@@ -20,7 +20,7 @@ async function createCredentialCompat() {
       rp,
       instrument: {
         icon: 'https://rsolomakhin.github.io/pr/spc/troy.png',
-        name: 'Demo User on ' + window.location.hostname,
+        name: 'Demo User',
         displayName: '',
       },
       challenge,
@@ -37,7 +37,7 @@ async function createCredentialCompat() {
       rp,
       user: {
         id: Uint8Array.from(String(Math.random()*999999999), c => c.charCodeAt(0)),
-        name: 'Demo User on ' + window.location.hostname,
+        name: 'Demo User',
         displayName: '',
       },
       challenge,
diff --git a/pr/spc-create-in-cross-origin-iframe/pr.js b/pr/spc-create-in-cross-origin-iframe/pr.js
index 8d95034..891a0aa 100644
--- a/pr/spc-create-in-cross-origin-iframe/pr.js
+++ b/pr/spc-create-in-cross-origin-iframe/pr.js
@@ -19,7 +19,7 @@ async function createCredentialInner(residentKey, requireResidentKey) {
     // (e.g., the Passkeys UX on Chrome MacOS 108+). This is for display ONLY,
     // and has no bearing on SPC's functionality in general. (For example, it
     // is NOT shown in the SPC transaction dialog.)
-    name: 'Demo User on ' + window.location.hostname,
+    name: 'Demo User',
     displayName: '',
     id: Uint8Array.from(userId, c => c.charCodeAt(0)),
   }
diff --git a/pr/spc-create-resident-key/pr.js b/pr/spc-create-resident-key/pr.js
index 8d95034..891a0aa 100644
--- a/pr/spc-create-resident-key/pr.js
+++ b/pr/spc-create-resident-key/pr.js
@@ -19,7 +19,7 @@ async function createCredentialInner(residentKey, requireResidentKey) {
     // (e.g., the Passkeys UX on Chrome MacOS 108+). This is for display ONLY,
     // and has no bearing on SPC's functionality in general. (For example, it
     // is NOT shown in the SPC transaction dialog.)
-    name: 'Demo User on ' + window.location.hostname,
+    name: 'Demo User',
     displayName: '',
     id: Uint8Array.from(userId, c => c.charCodeAt(0)),
   }
diff --git a/pr/spc_util.js b/pr/spc_util.js
index a2dbeae..54961c7 100644
--- a/pr/spc_util.js
+++ b/pr/spc_util.js
@@ -29,7 +29,7 @@ async function createCredential(setPaymentExtension, optionalOverrides = {}) {
     // (e.g., the Passkeys UX on Chrome MacOS 108+). This is for display ONLY,
     // and has no bearing on SPC's functionality in general. (For example, it
     // is NOT shown in the SPC transaction dialog.)
-    name: 'Demo User on ' + window.location.hostname,
+    name: 'Demo User',
     displayName: '',
     id: Uint8Array.from(userId, c => c.charCodeAt(0)),
   }