diff --git a/lib/src/lints/proper_super_calls/proper_super_calls_rule.dart b/lib/src/lints/proper_super_calls/proper_super_calls_rule.dart
index c804d9e..166b736 100644
--- a/lib/src/lints/proper_super_calls/proper_super_calls_rule.dart
+++ b/lib/src/lints/proper_super_calls/proper_super_calls_rule.dart
@@ -89,9 +89,11 @@ class ProperSuperCallsRule extends SolidLintRule {
     context.registry.addMethodDeclaration(
       (node) {
         final methodName = node.name.toString();
+        final body = node.body;
 
-        if (methodName == _initState || methodName == _dispose) {
-          final statements = (node.body as BlockFunctionBody).block.statements;
+        if (methodName case _initState || _dispose
+            when body is BlockFunctionBody) {
+          final statements = body.block.statements;
 
           _checkSuperCalls(
             node,
diff --git a/lint_test/proper_super_calls_test.dart b/lint_test/proper_super_calls_test.dart
index 2bc794b..0de343c 100644
--- a/lint_test/proper_super_calls_test.dart
+++ b/lint_test/proper_super_calls_test.dart
@@ -75,3 +75,7 @@ class MyClass {
   dispose() {}
   initState() {}
 }
+
+abstract interface class Disposable {
+  void dispose();
+}