diff --git a/include/services/gsp_gpu.hpp b/include/services/gsp_gpu.hpp
index bc8ed287..f3fc57bb 100644
--- a/include/services/gsp_gpu.hpp
+++ b/include/services/gsp_gpu.hpp
@@ -34,6 +34,7 @@ class GPUService {
 	void acquireRight(u32 messagePointer);
 	void flushDataCache(u32 messagePointer);
 	void registerInterruptRelayQueue(u32 messagePointer);
+	void setInternalPriorities(u32 messagePointer);
 	void setLCDForceBlack(u32 messagePointer);
 	void triggerCmdReqQueue(u32 messagePointer);
 	void writeHwRegs(u32 messagePointer);
diff --git a/src/core/services/gsp_gpu.cpp b/src/core/services/gsp_gpu.cpp
index fed35b3b..13153a53 100644
--- a/src/core/services/gsp_gpu.cpp
+++ b/src/core/services/gsp_gpu.cpp
@@ -9,7 +9,8 @@ namespace ServiceCommands {
 		WriteHwRegsWithMask = 0x00020084,
 		FlushDataCache = 0x00080082,
 		SetLCDForceBlack = 0x000B0040,
-		TriggerCmdReqQueue = 0x000C0000
+		TriggerCmdReqQueue = 0x000C0000,
+		SetInternalPriorities = 0x001E0080
 	};
 }
 
@@ -41,6 +42,7 @@ void GPUService::handleSyncRequest(u32 messagePointer) {
 		case ServiceCommands::AcquireRight: acquireRight(messagePointer); break;
 		case ServiceCommands::FlushDataCache: flushDataCache(messagePointer); break;
 		case ServiceCommands::RegisterInterruptRelayQueue: registerInterruptRelayQueue(messagePointer); break;
+		case ServiceCommands::SetInternalPriorities: setInternalPriorities(messagePointer); break;
 		case ServiceCommands::SetLCDForceBlack: setLCDForceBlack(messagePointer); break;
 		case ServiceCommands::TriggerCmdReqQueue: triggerCmdReqQueue(messagePointer); break;
 		case ServiceCommands::WriteHwRegs: writeHwRegs(messagePointer); break;
@@ -195,6 +197,12 @@ void GPUService::triggerCmdReqQueue(u32 messagePointer) {
 	mem.write32(messagePointer + 4, Result::Success);
 }
 
+// Seems to be completely undocumented, probably not very important or useful
+void GPUService::setInternalPriorities(u32 messagePointer) {
+	log("GSP::GPU::SetInternalPriorities\n");
+	mem.write32(messagePointer + 4, Result::Success);
+}
+
 void GPUService::processCommandBuffer() {
 	if (sharedMem == nullptr) [[unlikely]] { // Shared memory hasn't been set up yet
 		return;