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-rw-r--r--lib/windows/winlean.nim3
1 files changed, 3 insertions, 0 deletions
diff --git a/lib/windows/winlean.nim b/lib/windows/winlean.nim
index d00964a6d..9224c1ebd 100644
--- a/lib/windows/winlean.nim
+++ b/lib/windows/winlean.nim
@@ -14,6 +14,9 @@
 
 import dynlib
 
+when defined(vcc):
+  {.passC: "-DWIN32_LEAN_AND_MEAN".}
+
 const
   useWinUnicode* = not defined(useWinAnsi)