diff --git a/BUILD.gn b/BUILD.gn
index 769fddc..9b56c6d 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -24,7 +24,6 @@
 
   if (is_win) {
     defines += [
-      "_WINDLL",
       "NO_SANITIZE_FUNCTION=",
 
       # Disable MSVC warnings about std::aligned_storage being broken before