diff --git a/lib/config.dos b/lib/config.dos
index ead655f97f..6b36fca499 100644
--- a/lib/config.dos
+++ b/lib/config.dos
@@ -97,6 +97,7 @@
 #endif
 
 #ifdef USE_SSLEAY   /* on cmd-line */
+  #define HAVE_CRYPTO_CLEANUP_ALL_EX_DATA 1
   #define HAVE_OPENSSL_ENGINE_H  1
   #define OPENSSL_NO_KRB5        1
   #define USE_OPENSSL            1