diff --git a/TracyClient.cpp b/TracyClient.cpp
index 17b14ccd..422f999d 100644
--- a/TracyClient.cpp
+++ b/TracyClient.cpp
@@ -9,6 +9,10 @@
 
 // Define TRACY_ENABLE to enable profiler.
 
+#if ( defined _MSC_VER || defined __CYGWIN__ ) && !defined WIN32_LEAN_AND_MEAN
+#  define WIN32_LEAN_AND_MEAN
+#endif
+
 #include "common/TracySystem.cpp"
 
 #ifdef TRACY_ENABLE