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-rw-r--r--random.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/random.c b/random.c
index 3fde5c3..0ce2aef 100644
--- a/random.c
+++ b/random.c
@@ -89,6 +89,7 @@ The original copyright notice follows.
# define _WIN32_WINNT 0x400
# undef __WINCRYPT_H__
# endif
+#include <windows.h>
#include <wincrypt.h>
#endif
#include "ruby_atomic.h"