diff --git a/include/services/apt.hpp b/include/services/apt.hpp
index 53c6eafc..3944e850 100644
--- a/include/services/apt.hpp
+++ b/include/services/apt.hpp
@@ -48,12 +48,12 @@ class APTService {
 	void isRegistered(u32 messagePointer);
 	void notifyToWait(u32 messagePointer);
 	void preloadLibraryApplet(u32 messagePointer);
+	void prepareToStartLibraryApplet(u32 messagePointer);
 	void receiveParameter(u32 messagePointer);
 	void replySleepQuery(u32 messagePointer);
 	void setApplicationCpuTimeLimit(u32 messagePointer);
 	void setScreencapPostPermission(u32 messagePointer);
 	void sendParameter(u32 messagePointer);
-	void prepareToStartLibraryApplet(u32 messagePointer);
 	void startLibraryApplet(u32 messagePointer);
 	void theSmashBrosFunction(u32 messagePointer);
 
diff --git a/src/core/services/apt.cpp b/src/core/services/apt.cpp
index 4839c152..a775c2cc 100644
--- a/src/core/services/apt.cpp
+++ b/src/core/services/apt.cpp
@@ -16,6 +16,7 @@ namespace APTCommands {
 		ReceiveParameter = 0x000D0080,
 		GlanceParameter = 0x000E0080,
 		PreloadLibraryApplet = 0x00160040,
+		PrepareToStartLibraryApplet = 0x00180040,
 		StartLibraryApplet = 0x001E0084,
 		ReplySleepQuery = 0x003E0080,
 		NotifyToWait = 0x00430040,
@@ -97,6 +98,7 @@ void APTService::handleSyncRequest(u32 messagePointer) {
 		case APTCommands::GlanceParameter: glanceParameter(messagePointer); break;
 		case APTCommands::NotifyToWait: notifyToWait(messagePointer); break;
 		case APTCommands::PreloadLibraryApplet: preloadLibraryApplet(messagePointer); break;
+		case APTCommands::PrepareToStartLibraryApplet: prepareToStartLibraryApplet(messagePointer); break;
 		case APTCommands::ReceiveParameter: [[likely]] receiveParameter(messagePointer); break;
 		case APTCommands::ReplySleepQuery: replySleepQuery(messagePointer); break;
 		case APTCommands::SetApplicationCpuTimeLimit: setApplicationCpuTimeLimit(messagePointer); break;
@@ -150,7 +152,7 @@ void APTService::getAppletInfo(u32 messagePointer) {
 
 void APTService::isRegistered(u32 messagePointer) {
 	const u32 appID = mem.read32(messagePointer + 4);
-	Helpers::warn("APT::IsRegistered (appID = %X)\n", appID);
+	Helpers::warn("APT::IsRegistered (appID = %X)", appID);
 
 	mem.write32(messagePointer, IPC::responseHeader(0x09, 2, 0));
 	mem.write32(messagePointer + 4, Result::Success);
@@ -165,6 +167,14 @@ void APTService::preloadLibraryApplet(u32 messagePointer) {
 	mem.write32(messagePointer + 4, Result::Success);
 }
 
+void APTService::prepareToStartLibraryApplet(u32 messagePointer) {
+	const u32 appID = mem.read32(messagePointer + 4);
+	log("APT::PrepareToStartLibraryApplet (app ID = %X) (stubbed)\n", appID);
+
+	mem.write32(messagePointer, IPC::responseHeader(0x16, 1, 0));
+	mem.write32(messagePointer + 4, Result::Success);
+}
+
 void APTService::checkNew3DS(u32 messagePointer) {
 	log("APT::CheckNew3DS\n");
 	mem.write32(messagePointer, IPC::responseHeader(0x102, 2, 0));
@@ -247,7 +257,7 @@ void APTService::sendParameter(u32 messagePointer) {
 	mem.write32(messagePointer, IPC::responseHeader(0x0C, 1, 0));
 	mem.write32(messagePointer + 4, Result::Success);
 
-	kernel.signalEvent(notificationEvent.value());
+	kernel.signalEvent(resumeEvent.value());
 }
 
 void APTService::receiveParameter(u32 messagePointer) {
diff --git a/src/core/services/gsp_gpu.cpp b/src/core/services/gsp_gpu.cpp
index 16962cf8..0e27c0ec 100644
--- a/src/core/services/gsp_gpu.cpp
+++ b/src/core/services/gsp_gpu.cpp
@@ -464,7 +464,7 @@ void GPUService::triggerTextureCopy(u32* cmd) {
 // Used when transitioning from the app to an OS applet, such as software keyboard, mii maker, mii selector, etc
 // Stubbed until we decide to support LLE applets
 void GPUService::saveVramSysArea(u32 messagePointer) {
-	Helpers::warn("GSP::GPU::SaveVramSysArea (stubbed)\n");
+	Helpers::warn("GSP::GPU::SaveVramSysArea (stubbed)");
 
 	mem.write32(messagePointer, IPC::responseHeader(0x19, 1, 0));
 	mem.write32(messagePointer + 4, Result::Success);
@@ -472,7 +472,7 @@ void GPUService::saveVramSysArea(u32 messagePointer) {
 
 // Used in similar fashion to the SaveVramSysArea function
 void GPUService::importDisplayCaptureInfo(u32 messagePointer) {
-	Helpers::warn("GSP::GPU::ImportDisplayCaptureInfo (stubbed)\n");
+	Helpers::warn("GSP::GPU::ImportDisplayCaptureInfo (stubbed)");
 
 	mem.write32(messagePointer, IPC::responseHeader(0x18, 9, 0));
 	mem.write32(messagePointer + 4, Result::Success);