diff --git a/src/catch2/interfaces/catch_interfaces_enum_values_registry.hpp b/src/catch2/interfaces/catch_interfaces_enum_values_registry.hpp
index 2c18059a..e00f2c9d 100644
--- a/src/catch2/interfaces/catch_interfaces_enum_values_registry.hpp
+++ b/src/catch2/interfaces/catch_interfaces_enum_values_registry.hpp
@@ -26,7 +26,7 @@ namespace Catch {
     } // namespace Detail
 
     struct IMutableEnumValuesRegistry {
-        virtual ~IMutableEnumValuesRegistry();
+        virtual ~IMutableEnumValuesRegistry(); // = default;
 
         virtual Detail::EnumInfo const& registerEnum( StringRef enumName, StringRef allEnums, std::vector<int> const& values ) = 0;
 
diff --git a/src/catch2/interfaces/catch_interfaces_exception.hpp b/src/catch2/interfaces/catch_interfaces_exception.hpp
index 5d660873..c1834074 100644
--- a/src/catch2/interfaces/catch_interfaces_exception.hpp
+++ b/src/catch2/interfaces/catch_interfaces_exception.hpp
@@ -21,12 +21,12 @@ namespace Catch {
     using ExceptionTranslators = std::vector<Detail::unique_ptr<IExceptionTranslator const>>;
 
     struct IExceptionTranslator {
-        virtual ~IExceptionTranslator();
+        virtual ~IExceptionTranslator(); // = default
         virtual std::string translate( ExceptionTranslators::const_iterator it, ExceptionTranslators::const_iterator itEnd ) const = 0;
     };
 
     struct IExceptionTranslatorRegistry {
-        virtual ~IExceptionTranslatorRegistry();
+        virtual ~IExceptionTranslatorRegistry(); // = default
 
         virtual std::string translateActiveException() const = 0;
     };
diff --git a/src/catch2/interfaces/catch_interfaces_registry_hub.hpp b/src/catch2/interfaces/catch_interfaces_registry_hub.hpp
index bea1f7d4..71f2faa2 100644
--- a/src/catch2/interfaces/catch_interfaces_registry_hub.hpp
+++ b/src/catch2/interfaces/catch_interfaces_registry_hub.hpp
@@ -31,7 +31,7 @@ namespace Catch {
     using IReporterFactoryPtr = Detail::unique_ptr<IReporterFactory>;
 
     struct IRegistryHub {
-        virtual ~IRegistryHub();
+        virtual ~IRegistryHub(); // = default
 
         virtual IReporterRegistry const& getReporterRegistry() const = 0;
         virtual ITestCaseRegistry const& getTestCaseRegistry() const = 0;
@@ -43,7 +43,7 @@ namespace Catch {
     };
 
     struct IMutableRegistryHub {
-        virtual ~IMutableRegistryHub();
+        virtual ~IMutableRegistryHub(); // = default
         virtual void registerReporter( std::string const& name, IReporterFactoryPtr factory ) = 0;
         virtual void registerListener( IReporterFactoryPtr factory ) = 0;
         virtual void registerTest(Detail::unique_ptr<TestCaseInfo>&& testInfo, Detail::unique_ptr<ITestInvoker>&& invoker) = 0;
diff --git a/src/catch2/interfaces/catch_interfaces_reporter_registry.hpp b/src/catch2/interfaces/catch_interfaces_reporter_registry.hpp
index 05195f37..54871cce 100644
--- a/src/catch2/interfaces/catch_interfaces_reporter_registry.hpp
+++ b/src/catch2/interfaces/catch_interfaces_reporter_registry.hpp
@@ -27,7 +27,7 @@ namespace Catch {
         using FactoryMap = std::map<std::string, IReporterFactoryPtr>;
         using Listeners = std::vector<IReporterFactoryPtr>;
 
-        virtual ~IReporterRegistry();
+        virtual ~IReporterRegistry(); // = default
         virtual IStreamingReporterPtr create( std::string const& name, IConfig const* config ) const = 0;
         virtual FactoryMap const& getFactories() const = 0;
         virtual Listeners const& getListeners() const = 0;
diff --git a/src/catch2/interfaces/catch_interfaces_tag_alias_registry.hpp b/src/catch2/interfaces/catch_interfaces_tag_alias_registry.hpp
index 152fdc23..6b0973b4 100644
--- a/src/catch2/interfaces/catch_interfaces_tag_alias_registry.hpp
+++ b/src/catch2/interfaces/catch_interfaces_tag_alias_registry.hpp
@@ -15,7 +15,7 @@ namespace Catch {
     struct TagAlias;
 
     struct ITagAliasRegistry {
-        virtual ~ITagAliasRegistry();
+        virtual ~ITagAliasRegistry(); // = default
         // Nullptr if not present
         virtual TagAlias const* find( std::string const& alias ) const = 0;
         virtual std::string expandAliases( std::string const& unexpandedTestSpec ) const = 0;
diff --git a/src/catch2/interfaces/catch_interfaces_testcase.hpp b/src/catch2/interfaces/catch_interfaces_testcase.hpp
index aad5ea20..2d0b6c28 100644
--- a/src/catch2/interfaces/catch_interfaces_testcase.hpp
+++ b/src/catch2/interfaces/catch_interfaces_testcase.hpp
@@ -17,14 +17,14 @@ namespace Catch {
 
     struct ITestInvoker {
         virtual void invoke () const = 0;
-        virtual ~ITestInvoker();
+        virtual ~ITestInvoker(); // = default
     };
 
     class TestCaseHandle;
     struct IConfig;
 
     struct ITestCaseRegistry {
-        virtual ~ITestCaseRegistry();
+        virtual ~ITestCaseRegistry(); // = default
         // TODO: this exists only for adding filenames to test cases -- let's expose this in a saner way later
         virtual std::vector<TestCaseInfo* > const& getAllInfos() const = 0;
         virtual std::vector<TestCaseHandle> const& getAllTests() const = 0;
diff --git a/src/catch2/internal/catch_context.hpp b/src/catch2/internal/catch_context.hpp
index 6f660f3a..ca697431 100644
--- a/src/catch2/internal/catch_context.hpp
+++ b/src/catch2/internal/catch_context.hpp
@@ -16,7 +16,7 @@ namespace Catch {
 
     struct IContext
     {
-        virtual ~IContext();
+        virtual ~IContext(); // = default
 
         virtual IResultCapture* getResultCapture() = 0;
         virtual IRunner* getRunner() = 0;
@@ -25,7 +25,7 @@ namespace Catch {
 
     struct IMutableContext : IContext
     {
-        virtual ~IMutableContext();
+        virtual ~IMutableContext(); // = default
         virtual void setResultCapture( IResultCapture* resultCapture ) = 0;
         virtual void setRunner( IRunner* runner ) = 0;
         virtual void setConfig( IConfig const* config ) = 0;
diff --git a/src/catch2/internal/catch_enum_values_registry.cpp b/src/catch2/internal/catch_enum_values_registry.cpp
index b4f425d4..ef4baf9a 100644
--- a/src/catch2/internal/catch_enum_values_registry.cpp
+++ b/src/catch2/internal/catch_enum_values_registry.cpp
@@ -13,7 +13,7 @@
 
 namespace Catch {
 
-    IMutableEnumValuesRegistry::~IMutableEnumValuesRegistry() {}
+    IMutableEnumValuesRegistry::~IMutableEnumValuesRegistry() = default;
 
     namespace Detail {
 
diff --git a/src/catch2/internal/catch_singletons.cpp b/src/catch2/internal/catch_singletons.cpp
index 36e0e7bd..116fce46 100644
--- a/src/catch2/internal/catch_singletons.cpp
+++ b/src/catch2/internal/catch_singletons.cpp
@@ -20,7 +20,7 @@ namespace Catch {
         }
     }
 
-    ISingleton::~ISingleton() {}
+    ISingleton::~ISingleton() = default;
 
     void addSingleton(ISingleton* singleton ) {
         getSingletons()->push_back( singleton );
diff --git a/src/catch2/internal/catch_singletons.hpp b/src/catch2/internal/catch_singletons.hpp
index 0a7f7ccc..d06d2244 100644
--- a/src/catch2/internal/catch_singletons.hpp
+++ b/src/catch2/internal/catch_singletons.hpp
@@ -11,7 +11,7 @@
 namespace Catch {
 
     struct ISingleton {
-        virtual ~ISingleton();
+        virtual ~ISingleton(); // = default
     };
 
 
diff --git a/src/catch2/internal/catch_stream.hpp b/src/catch2/internal/catch_stream.hpp
index 4ff012d2..b764f825 100644
--- a/src/catch2/internal/catch_stream.hpp
+++ b/src/catch2/internal/catch_stream.hpp
@@ -22,7 +22,7 @@ namespace Catch {
     std::ostream& clog();
 
     struct IStream {
-        virtual ~IStream();
+        virtual ~IStream(); // = default
         virtual std::ostream& stream() const = 0;
     };
 
diff --git a/src/catch2/internal/catch_tag_alias_registry.cpp b/src/catch2/internal/catch_tag_alias_registry.cpp
index 5df3c02b..8c3e339f 100644
--- a/src/catch2/internal/catch_tag_alias_registry.cpp
+++ b/src/catch2/internal/catch_tag_alias_registry.cpp
@@ -46,7 +46,7 @@ namespace Catch {
                       << "\tRedefined at: " << lineInfo );
     }
 
-    ITagAliasRegistry::~ITagAliasRegistry() {}
+    ITagAliasRegistry::~ITagAliasRegistry() = default;
 
     ITagAliasRegistry const& ITagAliasRegistry::get() {
         return getRegistryHub().getTagAliasRegistry();
diff --git a/src/catch2/internal/catch_test_case_tracker.hpp b/src/catch2/internal/catch_test_case_tracker.hpp
index c3ed1ae0..db2afa79 100644
--- a/src/catch2/internal/catch_test_case_tracker.hpp
+++ b/src/catch2/internal/catch_test_case_tracker.hpp
@@ -51,7 +51,7 @@ namespace TestCaseTracking {
             return m_nameAndLocation;
         }
 
-        virtual ~ITracker();
+        virtual ~ITracker(); // = default
 
 
         // dynamic queries