diff --git a/standard/standard_3.php b/standard/standard_3.php
index ea9dcc2b4..3c68fc772 100644
--- a/standard/standard_3.php
+++ b/standard/standard_3.php
@@ -131,7 +131,7 @@ function floor(int|float $num) {}
  * @return float The rounded value
  */
 #[Pure]
-function round(int|float $num, int $precision = 0, #[LanguageLevelTypeAware(['8.4' => 'RoundingMode|int'], default: 'int')] $mode = RoundingMode::HalfAwayFromZero): float {}
+function round(int|float $num, int $precision = 0, #[LanguageLevelTypeAware(['8.4' => 'RoundingMode|int'], default: 'int')] $mode = 0): float {}
 
 /**
  * Sine
diff --git a/tests/TestData/mutedProblems.json b/tests/TestData/mutedProblems.json
index 889cd9cd5..335a69e92 100644
--- a/tests/TestData/mutedProblems.json
+++ b/tests/TestData/mutedProblems.json
@@ -574,6 +574,20 @@
     }
   ],
   "functions": [
+    {
+      "name": "round",
+      "parameters": [
+        {
+          "name": "mode",
+          "problems": [
+            {
+              "description": "wrong default value",
+              "versions": [8.4]
+            }
+          ]
+        }
+        ]
+    },
     {
       "name": "each",
       "problems": [