diff --git a/Source/Core/VideoCommon/CommandProcessor.cpp b/Source/Core/VideoCommon/CommandProcessor.cpp
index 0cf8dd3b7b..287d93d28f 100644
--- a/Source/Core/VideoCommon/CommandProcessor.cpp
+++ b/Source/Core/VideoCommon/CommandProcessor.cpp
@@ -238,7 +238,7 @@ void RegisterMMIO(MMIO::Mapping* mmio, u32 base)
                      MMIO::DirectRead<u16>(MMIO::Utils::HighPart(&fifo.CPReadWriteDistance)),
                  MMIO::ComplexWrite<u16>([](u32, u16 val) {
                    WriteHigh(fifo.CPReadWriteDistance, val);
-                   Fifo::SyncGPU(Fifo::SYNC_GPU_OTHER);
+                   Fifo::SyncGPU(Fifo::SyncGPUReason::Other);
                    if (fifo.CPReadWriteDistance == 0)
                    {
                      GPFifo::ResetGatherPipe();
diff --git a/Source/Core/VideoCommon/Fifo.cpp b/Source/Core/VideoCommon/Fifo.cpp
index 48dcd9cf9b..bb4ad817a2 100644
--- a/Source/Core/VideoCommon/Fifo.cpp
+++ b/Source/Core/VideoCommon/Fifo.cpp
@@ -92,7 +92,7 @@ void PauseAndLock(bool doLock, bool unpauseOnUnlock)
 {
   if (doLock)
   {
-    SyncGPU(SYNC_GPU_OTHER);
+    SyncGPU(SyncGPUReason::Other);
     EmulatorState(false);
     FlushGpu();
   }
@@ -199,7 +199,7 @@ void PushFifoAuxBuffer(void* ptr, size_t size)
 {
   if (size > (size_t)(s_fifo_aux_data + FIFO_SIZE - s_fifo_aux_write_ptr))
   {
-    SyncGPU(SYNC_GPU_AUX_SPACE, /* may_move_read_ptr */ false);
+    SyncGPU(SyncGPUReason::AuxSpace, /* may_move_read_ptr */ false);
     if (!s_gpu_mainloop.IsRunning())
     {
       // GPU is shutting down
@@ -255,7 +255,7 @@ static void ReadDataFromFifoOnCPU(u32 readPtr)
   {
     // We can't wrap around while the GPU is working on the data.
     // This should be very rare due to the reset in SyncGPU.
-    SyncGPU(SYNC_GPU_WRAPAROUND);
+    SyncGPU(SyncGPUReason::Wraparound);
     if (!s_gpu_mainloop.IsRunning())
     {
       // GPU is shutting down, so the next asserts may fail
diff --git a/Source/Core/VideoCommon/Fifo.h b/Source/Core/VideoCommon/Fifo.h
index d2172df655..ffe90c3ed9 100644
--- a/Source/Core/VideoCommon/Fifo.h
+++ b/Source/Core/VideoCommon/Fifo.h
@@ -20,15 +20,15 @@ void UpdateWantDeterminism(bool want);
 bool UseDeterministicGPUThread();
 
 // Used for diagnostics.
-enum SyncGPUReason
+enum class SyncGPUReason
 {
-  SYNC_GPU_OTHER,
-  SYNC_GPU_WRAPAROUND,
-  SYNC_GPU_EFB_POKE,
-  SYNC_GPU_PERFQUERY,
-  SYNC_GPU_BBOX,
-  SYNC_GPU_SWAP,
-  SYNC_GPU_AUX_SPACE,
+  Other,
+  Wraparound,
+  EFBPoke,
+  PerfQuery,
+  BBox,
+  Swap,
+  AuxSpace,
 };
 // In deterministic GPU thread mode this waits for the GPU to be done with pending work.
 void SyncGPU(SyncGPUReason reason, bool may_move_read_ptr = true);
diff --git a/Source/Core/VideoCommon/MainBase.cpp b/Source/Core/VideoCommon/MainBase.cpp
index 3b0eb8bf0a..5323651708 100644
--- a/Source/Core/VideoCommon/MainBase.cpp
+++ b/Source/Core/VideoCommon/MainBase.cpp
@@ -51,7 +51,7 @@ void VideoBackendBase::Video_BeginField(u32 xfbAddr, u32 fbWidth, u32 fbStride,
 {
   if (m_initialized && g_ActiveConfig.bUseXFB && g_renderer)
   {
-    Fifo::SyncGPU(Fifo::SYNC_GPU_SWAP);
+    Fifo::SyncGPU(Fifo::SyncGPUReason::Swap);
 
     AsyncRequests::Event e;
     e.time = 0;
@@ -106,7 +106,7 @@ u32 VideoBackendBase::Video_GetQueryResult(PerfQueryType type)
     return 0;
   }
 
-  Fifo::SyncGPU(Fifo::SYNC_GPU_PERFQUERY);
+  Fifo::SyncGPU(Fifo::SyncGPUReason::PerfQuery);
 
   AsyncRequests::Event e;
   e.time = 0;
@@ -133,7 +133,7 @@ u16 VideoBackendBase::Video_GetBoundingBox(int index)
     return 0;
   }
 
-  Fifo::SyncGPU(Fifo::SYNC_GPU_BBOX);
+  Fifo::SyncGPU(Fifo::SyncGPUReason::BBox);
 
   AsyncRequests::Event e;
   u16 result;