diff --git a/lib/lints/no_magic_number/no_magic_number_rule.dart b/lib/lints/no_magic_number/no_magic_number_rule.dart
index 6f282425..be55635b 100644
--- a/lib/lints/no_magic_number/no_magic_number_rule.dart
+++ b/lib/lints/no_magic_number/no_magic_number_rule.dart
@@ -70,7 +70,8 @@ class NoMagicNumberRule extends SolidLintRule<NoMagicNumberParameters> {
           .where(_isNotInDateTime)
           .where(_isNotInsideIndexExpression)
           .where(_isNotInsideEnumConstantArguments)
-          .where(_isNotDefaultValue);
+          .where(_isNotDefaultValue)
+          .where(_isNotInConstructorInitializer);
 
       for (final magicNumber in magicNumbers) {
         reporter.reportErrorForNode(code, magicNumber);
@@ -127,4 +128,8 @@ class NoMagicNumberRule extends SolidLintRule<NoMagicNumberParameters> {
   bool _isNotDefaultValue(Literal literal) {
     return literal.thisOrAncestorOfType<DefaultFormalParameter>() == null;
   }
+
+  bool _isNotInConstructorInitializer(Literal literal) {
+    return literal.thisOrAncestorOfType<ConstructorInitializer>() == null;
+  }
 }
diff --git a/lint_test/no_magic_number_test.dart b/lint_test/no_magic_number_test.dart
index 239564a5..454ca326 100644
--- a/lint_test/no_magic_number_test.dart
+++ b/lint_test/no_magic_number_test.dart
@@ -79,3 +79,10 @@ class DefaultValues {
 void topLevelFunctionWithDefaultParam({int value = 6}) {
   ({int value = 7}) {};
 }
+
+// Allowed for numbers in constructor initializer.
+class ConstructorInitializer {
+  final int value;
+
+  ConstructorInitializer() : value = 10;
+}