diff --git a/libraries/libstratosphere/include/stratosphere/sm/impl/sm_user_interface.hpp b/libraries/libstratosphere/include/stratosphere/sm/impl/sm_user_interface.hpp
index 6bb7c72f5..d94a44500 100644
--- a/libraries/libstratosphere/include/stratosphere/sm/impl/sm_user_interface.hpp
+++ b/libraries/libstratosphere/include/stratosphere/sm/impl/sm_user_interface.hpp
@@ -26,6 +26,7 @@ namespace ams::sm::impl {
         AMS_SF_METHOD_INFO(C, H,     1, Result, GetServiceHandle,                 (sf::OutMoveHandle out_h, ServiceName service))                                       \
         AMS_SF_METHOD_INFO(C, H,     2, Result, RegisterService,                  (sf::OutMoveHandle out_h, ServiceName service, u32 max_sessions, bool is_light))      \
         AMS_SF_METHOD_INFO(C, H,     3, Result, UnregisterService,                (ServiceName service))                                                                \
+        AMS_SF_METHOD_INFO(C, H,     4, Result, DetachClient,                     (const sf::ClientProcessId &client_process_id))                                       \
         AMS_SF_METHOD_INFO(C, H, 65000, Result, AtmosphereInstallMitm,            (sf::OutMoveHandle srv_h, sf::OutMoveHandle qry_h, ServiceName service))              \
         AMS_SF_METHOD_INFO(C, H, 65001, Result, AtmosphereUninstallMitm,          (ServiceName service))                                                                \
         AMS_SF_METHOD_INFO(C, H, 65003, Result, AtmosphereAcknowledgeMitmSession, (sf::Out<MitmProcessInfo> client_info, sf::OutMoveHandle fwd_h, ServiceName service)) \
diff --git a/stratosphere/sm/source/sm_user_service.cpp b/stratosphere/sm/source/sm_user_service.cpp
index de9c8b6e2..f3b15295d 100644
--- a/stratosphere/sm/source/sm_user_service.cpp
+++ b/stratosphere/sm/source/sm_user_service.cpp
@@ -51,6 +51,11 @@ namespace ams::sm {
         return impl::UnregisterService(this->process_id, service);
     }
 
+    Result UserService::DetachClient(const sf::ClientProcessId &client_process_id) {
+        this->has_initialized = false;
+        return ResultSuccess();
+    }
+
     Result UserService::AtmosphereInstallMitm(sf::OutMoveHandle srv_h, sf::OutMoveHandle qry_h, ServiceName service) {
         R_TRY(this->EnsureInitialized());
         return impl::InstallMitm(srv_h.GetHandlePointer(), qry_h.GetHandlePointer(), this->process_id, service);
diff --git a/stratosphere/sm/source/sm_user_service.hpp b/stratosphere/sm/source/sm_user_service.hpp
index dfb64b530..8dd22d6b8 100644
--- a/stratosphere/sm/source/sm_user_service.hpp
+++ b/stratosphere/sm/source/sm_user_service.hpp
@@ -34,6 +34,7 @@ namespace ams::sm {
             Result GetServiceHandle(sf::OutMoveHandle out_h, ServiceName service);
             Result RegisterService(sf::OutMoveHandle out_h, ServiceName service, u32 max_sessions, bool is_light);
             Result UnregisterService(ServiceName service);
+            Result DetachClient(const sf::ClientProcessId &client_process_id);
 
             /* Atmosphere commands. */
             Result AtmosphereInstallMitm(sf::OutMoveHandle srv_h, sf::OutMoveHandle qry_h, ServiceName service);