diff --git a/src/catch2/interfaces/catch_interfaces_config.hpp b/src/catch2/interfaces/catch_interfaces_config.hpp
index ca334326..0612eb83 100644
--- a/src/catch2/interfaces/catch_interfaces_config.hpp
+++ b/src/catch2/interfaces/catch_interfaces_config.hpp
@@ -14,7 +14,6 @@
 #include <iosfwd>
 #include <string>
 #include <vector>
-#include <memory>
 
 namespace Catch {
 
@@ -83,8 +82,6 @@ namespace Catch {
         virtual unsigned int benchmarkResamples() const = 0;
         virtual std::chrono::milliseconds benchmarkWarmupTime() const = 0;
     };
-
-    using IConfigPtr = std::shared_ptr<IConfig const>;
 }
 
 #endif // TWOBLUECUBES_CATCH_INTERFACES_CONFIG_H_INCLUDED
diff --git a/src/catch2/internal/catch_context.hpp b/src/catch2/internal/catch_context.hpp
index 1f64d7f9..b52a2267 100644
--- a/src/catch2/internal/catch_context.hpp
+++ b/src/catch2/internal/catch_context.hpp
@@ -8,8 +8,6 @@
 #ifndef TWOBLUECUBES_CATCH_CONTEXT_H_INCLUDED
 #define TWOBLUECUBES_CATCH_CONTEXT_H_INCLUDED
 
-#include <memory>
-
 namespace Catch {
 
     struct IResultCapture;
@@ -17,8 +15,6 @@ namespace Catch {
     struct IConfig;
     struct IMutableContext;
 
-    using IConfigPtr = std::shared_ptr<IConfig const>;
-
     struct IContext
     {
         virtual ~IContext();