diff --git a/src/editor/index.ts b/src/editor/index.ts
index db58fe773..dea567f29 100644
--- a/src/editor/index.ts
+++ b/src/editor/index.ts
@@ -106,7 +106,7 @@ export default class EditorModule implements IBaseModule<EditorConfig> {
     this.config = {
       ...defaults,
       ...config,
-      pStylePrefix: defaults.stylePrefix,
+      pStylePrefix: config.stylePrefix ?? defaults.stylePrefix,
     };
     this.em = new EditorModel(this.config);
     this.$ = opts.$;