diff --git a/src/libsodium/sodium/core.c b/src/libsodium/sodium/core.c
index aa23726e62..1af50134f0 100644
--- a/src/libsodium/sodium/core.c
+++ b/src/libsodium/sodium/core.c
@@ -18,7 +18,7 @@
 #include "utils.h"
 #include "private/mutex.h"
 
-#if !defined(_MSC_VER) && 1
+#if !defined(_MSC_VER) && 0
 # warning *** This is unstable, untested, development code.
 # warning It might not compile. It might not work as expected.
 # warning It might be totally insecure.