diff --git a/include/internal/catch_interfaces_testcase.h b/include/internal/catch_interfaces_testcase.h
index a1052b71..0c759166 100644
--- a/include/internal/catch_interfaces_testcase.h
+++ b/include/internal/catch_interfaces_testcase.h
@@ -16,12 +16,13 @@ namespace Catch {
 
     class TestSpec;
 
-    struct ITestCase : IShared {
+    struct ITestCase {
         virtual void invoke () const = 0;
-    protected:
         virtual ~ITestCase();
     };
 
+    using ITestCasePtr = std::shared_ptr<ITestCase>;
+
     class TestCase;
     struct IConfig;
 
diff --git a/include/internal/catch_test_case_info.h b/include/internal/catch_test_case_info.h
index 08519c5c..ac83cb3f 100644
--- a/include/internal/catch_test_case_info.h
+++ b/include/internal/catch_test_case_info.h
@@ -71,7 +71,7 @@ namespace Catch {
         bool operator < ( TestCase const& other ) const;
 
     private:
-        Ptr<ITestCase> test;
+        std::shared_ptr<ITestCase> test;
     };
 
     TestCase makeTestCase(  ITestCase* testCase,