1 files changed, 5 insertions, 4 deletions
diff --git a/e_os.h b/e_os.h
index 979be9b2b1..3e7a13f94d 100644
--- a/e_os.h
+++ b/e_os.h
@@ -359,10 +359,11 @@ inline int nssgetpid();
 
 # ifndef OPENSSL_NO_SECURE_MEMORY
    /* unistd.h defines _POSIX_VERSION */
-#  if defined(OPENSSL_SYS_UNIX) \
-      && ( (defined(_POSIX_VERSION) && _POSIX_VERSION >= 200112L)      \
-           || defined(__sun) || defined(__hpux) || defined(__sgi)      \
-           || defined(__osf__) )
+#  if (defined(OPENSSL_SYS_UNIX) \
+        && ( (defined(_POSIX_VERSION) && _POSIX_VERSION >= 200112L)      \
+             || defined(__sun) || defined(__hpux) || defined(__sgi)      \
+             || defined(__osf__) )) \
+      || defined(_WIN32)
       /* secure memory is implemented */
 #   else
 #     define OPENSSL_NO_SECURE_MEMORY