diff --git a/test/es-module/test-esm-data-urls.js b/test/es-module/test-esm-data-urls.js
index 5be45d0f7af..7ba7c5f4fb1 100644
--- a/test/es-module/test-esm-data-urls.js
+++ b/test/es-module/test-esm-data-urls.js
@@ -76,7 +76,7 @@ function createBase64URL(mime, body) {
       import('data:application/json;foo="test,",0',
         { assert: { type: 'json' } }), {
       name: 'SyntaxError',
-      message: /Unexpected end of JSON input/
+      message: /Unterminated string in JSON at position 3/
     });
   }
   {
diff --git a/test/es-module/test-esm-invalid-pjson.js b/test/es-module/test-esm-invalid-pjson.js
index cdbebb17b4b..83a46e331f9 100644
--- a/test/es-module/test-esm-invalid-pjson.js
+++ b/test/es-module/test-esm-invalid-pjson.js
@@ -21,7 +21,7 @@ child.on('close', mustCall((code, signal) => {
     stderr.includes(
       `[ERR_INVALID_PACKAGE_CONFIG]: Invalid package config ${invalidJson} ` +
       `while importing "invalid-pjson" from ${entry}. ` +
-      `Unexpected token } in JSON at position ${12 + checkoutEOL.length * 2}`
+      `Expected ':' after property name in JSON at position ${12 + checkoutEOL.length * 2}`
     ),
     stderr);
 }));