diff --git a/prettierJS/src/com/intellij/prettierjs/PrettierConfiguration.java b/prettierJS/src/com/intellij/prettierjs/PrettierConfiguration.java
index 3cc2a730ebf..5b6261768e5 100644
--- a/prettierJS/src/com/intellij/prettierjs/PrettierConfiguration.java
+++ b/prettierJS/src/com/intellij/prettierjs/PrettierConfiguration.java
@@ -47,7 +47,7 @@ public static class State {
 
   private static final boolean PRETTIER_ON_SAVE_DEFAULT = false;
   private static final boolean PRETTIER_ON_REFORMAT_DEFAULT = true;
-  @NonNls private static final String PRETTIER_FILES_PATTERN_DEFAULT = "{**/*,*}.{js,ts,jsx,tsx,vue,astro}";
+  @NonNls private static final String PRETTIER_FILES_PATTERN_DEFAULT = "{**/*,*}.{js,mjs,ts,jsx,tsx,json,vue,astro}";
 
   private static final NodePackageDescriptor PKG_DESC = new NodePackageDescriptor(PrettierUtil.PACKAGE_NAME);