diff --git a/server/TracyEvent.hpp b/server/TracyEvent.hpp
index 2fffac20..9d77bb58 100644
--- a/server/TracyEvent.hpp
+++ b/server/TracyEvent.hpp
@@ -523,6 +523,8 @@ struct GpuCtxData
 
 enum { GpuCtxDataSize = sizeof( GpuCtxData ) };
 
+enum class LockType : uint8_t;
+
 struct LockMap
 {
     struct TimeRange