diff --git a/libraries/libstratosphere/source/os/os_transfer_memory.cpp b/libraries/libstratosphere/source/os/os_transfer_memory.cpp
index 00456e34e..53a232881 100644
--- a/libraries/libstratosphere/source/os/os_transfer_memory.cpp
+++ b/libraries/libstratosphere/source/os/os_transfer_memory.cpp
@@ -122,6 +122,9 @@ namespace ams::os {
         tmem->address   = mapped_address;
         tmem->state     = TransferMemoryType::State_Mapped;
 
+        /* Set output address. */
+        *out = mapped_address;
+
         return ResultSuccess();
     }