diff --git a/sdk/lib/_internal/compiler/js_lib/js_helper.dart b/sdk/lib/_internal/compiler/js_lib/js_helper.dart
index 2248dc6ef57..c2d26ff6029 100644
--- a/sdk/lib/_internal/compiler/js_lib/js_helper.dart
+++ b/sdk/lib/_internal/compiler/js_lib/js_helper.dart
@@ -726,7 +726,7 @@ class Primitives {
       // the name out of that. If the decompiled name is a string containing an
       // identifier, we use that instead of the very generic 'Object'.
       var decompiled =
-          JS('var', r'#.match(/^\s*function\s*(\S*)\s*\(/)[1]',
+          JS('var', r'#.match(/^\s*function\s*([\w$]*)\s*\(/)[1]',
               JS('var', r'String(#.constructor)', object));
       if (decompiled is String)
         if (JS('bool', r'/^\w+$/.test(#)', decompiled))
diff --git a/tests/html/canvas_pixel_array_type_alias_test.dart b/tests/html/canvas_pixel_array_type_alias_test.dart
index f346850f3c5..4dd6b407825 100644
--- a/tests/html/canvas_pixel_array_type_alias_test.dart
+++ b/tests/html/canvas_pixel_array_type_alias_test.dart
@@ -94,7 +94,9 @@ main() {
       var data = context.createImageData(canvas.width, canvas.height).data;
       expect(inscrutable(data).runtimeType == data.runtimeType, isTrue);
     });
+  });
 
+  group('types2_runtimeTypeName', () {
     test('runtimeTypeName', () {
       var data = context.createImageData(canvas.width, canvas.height).data;
       expect('${inscrutable(data).runtimeType}', 'Uint8ClampedList');
diff --git a/tests/html/html.status b/tests/html/html.status
index 5d9ac65d5ca..5de74c5acc8 100644
--- a/tests/html/html.status
+++ b/tests/html/html.status
@@ -185,6 +185,9 @@ xsltprocessor_test/supported: Fail
 worker_test/functional: Fail # IE uses incorrect security context for Blob URIs.
 transferables_test: Fail # Issue 9846
 
+[ $compiler == dart2js && $minified ]
+canvas_pixel_array_type_alias_test/types2_runtimeTypeName: Fail, OK # Issue 12605
+
 [ $compiler == dart2js && $runtime == chrome ]
 css_test/supportsPointConversions: Fail # Issues 21710
 css_test/functional: Fail # Issues 21710
diff --git a/tests/language/language_dart2js.status b/tests/language/language_dart2js.status
index dd3cf4c6930..e5a340ae6a9 100644
--- a/tests/language/language_dart2js.status
+++ b/tests/language/language_dart2js.status
@@ -109,11 +109,13 @@ positional_parameters_type_test/02: MissingRuntimeError, OK
 issue13474_test: RuntimeError, OK
 generic_field_mixin3_test: Crash # Issue 18651
 
+[ $compiler == dart2js && $unchecked && $minified ]
+f_bounded_quantification5_test: Fail, OK # Issue 12605
+
 [ $compiler == dart2js && $minified ]
 cyclic_type_test/0*: Fail # Issue 12605
 cyclic_type2_test: Fail # Issue 12605
-f_bounded_quantification4_test: Fail # Issue 12605
-f_bounded_quantification5_test: Fail # Issue 12605
+f_bounded_quantification4_test: Fail, OK # Issue 12605
 mixin_generic_test: Fail # Issue 12605
 mixin_mixin2_test: Fail # Issue 12605
 mixin_mixin3_test: Fail # Issue 12605