diff --git a/src/postcss/nesting.js b/src/postcss/nesting.js
index 2dfab34..a17946d 100644
--- a/src/postcss/nesting.js
+++ b/src/postcss/nesting.js
@@ -37,6 +37,8 @@ export const nesting = postcssPlugin(
         // pseudo-class
         applyPostCSSIsPseudoClass(rule, helpers)
       }
+
+      delete rule.__marpitNestingOriginalSelector
     }
   },
 )