diff --git a/src/core/hle/service/apt.cpp b/src/core/hle/service/apt.cpp
index 67c53529a..ae040562c 100644
--- a/src/core/hle/service/apt.cpp
+++ b/src/core/hle/service/apt.cpp
@@ -17,7 +17,7 @@ namespace APT_U {
 
 void Initialize(Service::Interface* self) {
     u32* cmd_buff = Service::GetCommandBuffer();
-    DEBUG_LOG(KERNEL, "APT_U::Sync - Initialize");
+    DEBUG_LOG(KERNEL, "APT_U::Initialize called");
     
     cmd_buff[3] = Kernel::CreateEvent(RESETTYPE_ONESHOT); // APT menu event handle
     cmd_buff[4] = Kernel::CreateEvent(RESETTYPE_ONESHOT); // APT pause event handle
@@ -33,13 +33,20 @@ void GetLockHandle(Service::Interface* self) {
     u32 flags = cmd_buff[1]; // TODO(bunnei): Figure out the purpose of the flag field
     cmd_buff[1] = 0; // No error
     cmd_buff[5] = Kernel::CreateMutex(false);
-    DEBUG_LOG(KERNEL, "APT_U::GetLockHandle called : created handle 0x%08X", cmd_buff[5]);
+    DEBUG_LOG(KERNEL, "APT_U::GetLockHandle called handle=0x%08X", cmd_buff[5]);
+}
+
+void Enable(Service::Interface* self) {
+    u32* cmd_buff = Service::GetCommandBuffer();
+    u32 unk = cmd_buff[1]; // TODO(bunnei): What is this field used for?
+    cmd_buff[1] = 0; // No error
+    ERROR_LOG(KERNEL, "(UNIMPEMENTED) APT_U::Enable called unk=0x%08X", unk);
 }
 
 const Interface::FunctionInfo FunctionTable[] = {
     {0x00010040, GetLockHandle, "GetLockHandle"},
     {0x00020080, Initialize,    "Initialize"},
-    {0x00030040, NULL,          "Enable"},
+    {0x00030040, Enable,        "Enable"},
     {0x00040040, NULL,          "Finalize"},
     {0x00050040, NULL,          "GetAppletManInfo"},
     {0x00060040, NULL,          "GetAppletInfo"},