diff --git a/code/lib/create-storybook/src/services/VersionService.test.ts b/code/lib/create-storybook/src/services/VersionService.test.ts
index 05fa1f659961..4f7d06f4e156 100644
--- a/code/lib/create-storybook/src/services/VersionService.test.ts
+++ b/code/lib/create-storybook/src/services/VersionService.test.ts
@@ -156,6 +156,14 @@ describe('VersionService', () => {
       expect(integration).toBe('create-rsbuild');
     });
 
+    it('should NOT detect creatersbuild without separator', () => {
+      const ancestry = [{ command: 'npx creatersbuild' }];
+
+      const integration = versionService.getCliIntegrationFromAncestry(ancestry as any);
+
+      expect(integration).toBeUndefined();
+    });
+
     it('should detect @tanstack/start command', () => {
       const ancestry = [{ command: 'npx @tanstack/start@latest create my-app' }];
 
diff --git a/code/lib/create-storybook/src/services/VersionService.ts b/code/lib/create-storybook/src/services/VersionService.ts
index cd7efbb05dd0..5a5cef89c58e 100644
--- a/code/lib/create-storybook/src/services/VersionService.ts
+++ b/code/lib/create-storybook/src/services/VersionService.ts
@@ -56,7 +56,7 @@ export class VersionService {
         return svMatch[1].toLowerCase().includes('add') ? 'sv add' : 'sv create';
       }
       // Check for create-rsbuild or create rsbuild
-      const rsbuildMatch = ancestor.command?.match(/(?:^|\s)create[\s\-]?rsbuild/i);
+      const rsbuildMatch = ancestor.command?.match(/(?:^|\s)create[\s\-]rsbuild/i);
       if (rsbuildMatch) {
         return 'create-rsbuild';
       }