diff --git a/src/lib/evil/unposix/sys/time.h b/src/lib/evil/unposix/sys/time.h
index 5f9e2f3e5e..bc38968472 100644
--- a/src/lib/evil/unposix/sys/time.h
+++ b/src/lib/evil/unposix/sys/time.h
@@ -2,7 +2,7 @@
 #define SYS_TIME_H
 
 #ifndef WIN32_LEAN_AND_MEAN
-# define WIN32_LEAN_AND_MEAN 1
+# define WIN32_LEAN_AND_MEAN
 #endif
 // Windows Kit for Windows 10 already defines `struct timeval` and `time_t`
 #include <winsock2.h>