diff --git a/packages/core/src/plugin/provider/opencode.ts b/packages/core/src/plugin/provider/opencode.ts
index 7a9d43cbf78..3edff608462 100644
--- a/packages/core/src/plugin/provider/opencode.ts
+++ b/packages/core/src/plugin/provider/opencode.ts
@@ -73,7 +73,7 @@ class SsoRequiredError extends Schema.TaggedError<SsoRequiredError>()("OpencodeC
   url: Schema.String,
 }) {
   override get message() {
-    return `${ssoMessage(this.organization)}: ${this.url}`
+    return `${ssoMessage(this.organization)}.`
   }
 }
 
@@ -441,7 +441,7 @@ export const OpencodePlugin = define<HttpClient.HttpClient | Bus.Service | Manag
           {
             error: {
               type: "authentication_error",
-              message: status.url ? `${status.message}: ${status.url}` : `${status.message}.`,
+              message: `${status.message}.`,
             },
           },
           { status: event.response.status },
diff --git a/packages/core/test/plugin/provider-opencode.test.ts b/packages/core/test/plugin/provider-opencode.test.ts
index d6d37ae54a4..3ce2960dbb5 100644
--- a/packages/core/test/plugin/provider-opencode.test.ts
+++ b/packages/core/test/plugin/provider-opencode.test.ts
@@ -1017,7 +1017,7 @@ describe("OpencodePlugin", () => {
             body: {
               error: {
                 type: "authentication_error",
-                message: `Sign in with SSO again to use Acme: ${server.url.origin}/auth/sso/ssoconn_1/start?redirectTo=%2F`,
+                message: "Sign in with SSO again to use Acme.",
               },
             },
           }