diff --git a/Source/Windows/Common/FEXUnixLib.cpp b/Source/Windows/Common/FEXUnixLib.cpp
index 7b82753c1..4b6652a2b 100644
--- a/Source/Windows/Common/FEXUnixLib.cpp
+++ b/Source/Windows/Common/FEXUnixLib.cpp
@@ -149,7 +149,7 @@ bool TryEnableHardwareTSO() {
   }
 
   // Legacy Proton path.
-  bool Enable = TRUE;
+  BOOL Enable = TRUE;
   NTSTATUS Status = NtSetInformationProcess(NtCurrentProcess(), ProcessFexHardwareTso, &Enable, sizeof(Enable));
   return Status == STATUS_SUCCESS;
 }