diff --git a/ui/src/ui/custom-theme.test.ts b/ui/src/ui/custom-theme.test.ts
index da42d5d2b8ba..d922a6a325fb 100644
--- a/ui/src/ui/custom-theme.test.ts
+++ b/ui/src/ui/custom-theme.test.ts
@@ -112,6 +112,16 @@ describe("custom theme import helpers", () => {
       fetchUrl: "https://tweakcn.com/r/themes/amethyst-haze",
       themeId: "amethyst-haze",
     });
+    expect(normalizeTweakcnThemeUrl("https://tweakcn.com/r/themes/claude")).toEqual({
+      sourceUrl: "https://tweakcn.com/themes/claude",
+      fetchUrl: "https://tweakcn.com/r/themes/claude",
+      themeId: "claude",
+    });
+    expect(normalizeTweakcnThemeUrl("twitter")).toEqual({
+      sourceUrl: "https://tweakcn.com/themes/twitter",
+      fetchUrl: "https://tweakcn.com/r/themes/twitter",
+      themeId: "twitter",
+    });
   });
 
   it("maps a tweakcn payload into a normalized imported theme record", () => {
@@ -267,6 +277,7 @@ describe("custom theme import helpers", () => {
       throw new Error("Expected imported custom theme to parse");
     }
     expect(parsed.themeId).toBe("cmlhfpjhw000004l4f4ax3m7z");
+    expect(parseImportedCustomTheme({ ...imported, themeId: "claude" })?.themeId).toBe("claude");
     expect(parseImportedCustomTheme({ ...imported, light: {} })).toBeNull();
   });
 
diff --git a/ui/src/ui/custom-theme.ts b/ui/src/ui/custom-theme.ts
index 6e595d2815ee..458de75bad3e 100644
--- a/ui/src/ui/custom-theme.ts
+++ b/ui/src/ui/custom-theme.ts
@@ -3,7 +3,7 @@ import { z } from "zod";
 import { normalizeOptionalString } from "./string-coerce.ts";
 
 const TWEAKCN_HOSTS = new Set(["tweakcn.com", "www.tweakcn.com"]);
-const THEME_ID_PATTERN = /^[A-Za-z0-9][A-Za-z0-9_-]{7,127}$/;
+const THEME_ID_PATTERN = /^[A-Za-z0-9][A-Za-z0-9_-]{0,127}$/;
 const CUSTOM_THEME_STYLE_ID = "openclaw-custom-theme";
 const MAX_TWEAKCN_THEME_BYTES = 200_000;
 const MAX_CSS_TOKEN_LENGTH = 240;