diff --git a/src/mococrw/openssl_lib.h b/src/mococrw/openssl_lib.h
index 9540abb..5231c2e 100644
--- a/src/mococrw/openssl_lib.h
+++ b/src/mococrw/openssl_lib.h
@@ -30,7 +30,6 @@ extern "C" {
 #include <openssl/engine.h>
 #include <openssl/err.h>
 #include <openssl/evp.h>
-#include <openssl/hmac.h>
 #include <openssl/objects.h>
 #include <openssl/pem.h>
 #include <openssl/rand.h>
@@ -38,6 +37,7 @@ extern "C" {
 #include <openssl/ssl.h>
 #include <openssl/x509.h>
 #include <openssl/x509v3.h>
+#include <openssl/core_names.h>
 }
 
 namespace mococrw