diff --git a/src/catch2/interfaces/catch_interfaces_config.hpp b/src/catch2/interfaces/catch_interfaces_config.hpp
index 139d2c1e..f52315db 100644
--- a/src/catch2/interfaces/catch_interfaces_config.hpp
+++ b/src/catch2/interfaces/catch_interfaces_config.hpp
@@ -64,7 +64,7 @@ namespace Catch {
     class IStream;
     struct PathFilter;
 
-    class IConfig : public Detail::NonCopyable {
+    class IConfig : Detail::NonCopyable {
     public:
         virtual ~IConfig();