diff --git a/tests/individual/TimeTravelFrozen.cpp b/tests/individual/TimeTravelFrozen.cpp
index 7e5e52f95..71809bfdf 100644
--- a/tests/individual/TimeTravelFrozen.cpp
+++ b/tests/individual/TimeTravelFrozen.cpp
@@ -27,7 +27,7 @@ class TestReactor : public test_util::TestBase<TestReactor, 5000> {
     double rtf = 1.0;
 
     // Events
-    std::vector<std::string> events;
+    std::vector<std::string> events = {};
 
     TestReactor(std::unique_ptr<NUClear::Environment> environment) : TestBase(std::move(environment), false) {