1 files changed, 2 insertions, 1 deletions

diff --git a/src/lib/libcrypto/objects/o_names.c b/src/lib/libcrypto/objects/o_names.c
index 9ed1de92c9..4f61b15441 100644
--- a/src/lib/libcrypto/objects/o_names.c
+++ b/src/lib/libcrypto/objects/o_names.c
@@ -2,11 +2,12 @@
 #include <stdlib.h>
 #include <string.h>
 
+#include <openssl/opensslconf.h>
+
 #include <openssl/err.h>
 #include <openssl/lhash.h>
 #include <openssl/objects.h>
 #include <openssl/safestack.h>
-#include <openssl/e_os2.h>
 
 /* I use the ex_data stuff to manage the identifiers for the obj_name_types
  * that applications may define.  I only really use the free function field.