diff --git a/src/libsodium/include/sodium/private/common.h b/src/libsodium/include/sodium/private/common.h
index 9a2f7fab..f87d682e 100644
--- a/src/libsodium/include/sodium/private/common.h
+++ b/src/libsodium/include/sodium/private/common.h
@@ -1,7 +1,7 @@
 #ifndef common_H
 #define common_H 1
 
-#if !defined(_MSC_VER) && 0
+#if !defined(_MSC_VER) && 1
 # warning *** This is unstable, untested, development code.
 # warning It might not compile. It might not work as expected.
 # warning It might be totally insecure.