diff --git a/sdk/lib/_internal/js_dev_runtime/patch/math_patch.dart b/sdk/lib/_internal/js_dev_runtime/patch/math_patch.dart
index 288f66e838dc..fe52156c96f6 100644
--- a/sdk/lib/_internal/js_dev_runtime/patch/math_patch.dart
+++ b/sdk/lib/_internal/js_dev_runtime/patch/math_patch.dart
@@ -67,14 +67,14 @@ const int _POW2_32 = 0x100000000;
 
 @patch
 class Random {
-  static Random? _secureRandom;
+  static final Random _secureRandom = _JSSecureRandom();
 
   @patch
   factory Random([int? seed]) =>
       (seed == null) ? const _JSRandom() : _Random(seed);
 
   @patch
-  factory Random.secure() => _secureRandom ??= _JSSecureRandom();
+  factory Random.secure() => _secureRandom;
 }
 
 class _JSRandom implements Random {
diff --git a/sdk/lib/_internal/js_runtime/lib/math_patch.dart b/sdk/lib/_internal/js_runtime/lib/math_patch.dart
index 585f4c5aec48..64236b30932f 100644
--- a/sdk/lib/_internal/js_runtime/lib/math_patch.dart
+++ b/sdk/lib/_internal/js_runtime/lib/math_patch.dart
@@ -63,14 +63,14 @@ const int _POW2_32 = 0x100000000;
 
 @patch
 class Random {
-  static Random? _secureRandom;
+  static final Random _secureRandom = _JSSecureRandom();
 
   @patch
   factory Random([int? seed]) =>
-      (seed == null) ? const _JSRandom() : new _Random(seed);
+      (seed == null) ? const _JSRandom() : _Random(seed);
 
   @patch
-  factory Random.secure() => _secureRandom ??= _JSSecureRandom();
+  factory Random.secure() => _secureRandom;
 }
 
 class _JSRandom implements Random {