diff --git a/src/catch2/internal/catch_reporter_registry.cpp b/src/catch2/internal/catch_reporter_registry.cpp
index c4aef822..01b6b3a0 100644
--- a/src/catch2/internal/catch_reporter_registry.cpp
+++ b/src/catch2/internal/catch_reporter_registry.cpp
@@ -47,7 +47,8 @@ namespace Catch {
     void ReporterRegistry::registerReporter( std::string const& name, IReporterFactoryPtr factory ) {
         CATCH_ENFORCE( name.find( "::" ) == name.npos,
                        "'::' is not allowed in reporter name: '" + name + '\'' );
-        m_factories.emplace(name, CATCH_MOVE(factory));
+        auto ret = m_factories.emplace(name, CATCH_MOVE(factory));
+        CATCH_ENFORCE( ret.second, "reporter using '" + name + "' as name was already registered" );
     }
     void ReporterRegistry::registerListener(
         Detail::unique_ptr<EventListenerFactory> factory ) {
diff --git a/tests/SelfTest/IntrospectiveTests/Reporters.tests.cpp b/tests/SelfTest/IntrospectiveTests/Reporters.tests.cpp
index 5dde7038..97d1ad25 100644
--- a/tests/SelfTest/IntrospectiveTests/Reporters.tests.cpp
+++ b/tests/SelfTest/IntrospectiveTests/Reporters.tests.cpp
@@ -312,3 +312,18 @@ TEST_CASE("Registering reporter with '::' in name fails",
         Catch::Detail::make_unique<TestReporterFactory>() ),
         "'::' is not allowed in reporter name: 'with::doublecolons'" );
 }
+
+TEST_CASE("Registering multiple reporters with the same name fails",
+          "[reporters][registration][approvals]") {
+    Catch::ReporterRegistry registry;
+
+    registry.registerReporter(
+        "some-reporter-name",
+        Catch::Detail::make_unique<TestReporterFactory>() );
+
+    REQUIRE_THROWS_WITH(
+        registry.registerReporter(
+            "some-reporter-name",
+            Catch::Detail::make_unique<TestReporterFactory>() ),
+        "reporter using 'some-reporter-name' as name was already registered" );
+}