diff --git a/include/internal/catch_run_context.h b/include/internal/catch_run_context.h
index 952ef147..259fecd3 100644
--- a/include/internal/catch_run_context.h
+++ b/include/internal/catch_run_context.h
@@ -128,7 +128,7 @@ namespace Catch {
         TestRunInfo m_runInfo;
         IMutableContext& m_context;
         TestCase const* m_activeTestCase = nullptr;
-        ITracker* m_testCaseTracker;
+        ITracker* m_testCaseTracker = nullptr;
         Option<AssertionResult> m_lastResult;
 
         IConfigPtr m_config;