diff --git a/src/libcrypto.c b/src/libcrypto.c
index 340a3e64..a7eadb47 100644
--- a/src/libcrypto.c
+++ b/src/libcrypto.c
@@ -43,6 +43,7 @@
 #include <openssl/hmac.h>
 #include <openssl/opensslv.h>
 #include <openssl/rand.h>
+
 #include "libcrypto-compat.h"
 
 #ifdef HAVE_OPENSSL_AES_H
@@ -54,6 +55,10 @@
 #include <openssl/des.h>
 #endif
 
+#ifdef HAVE_OPENSSL_CRYPTO_CTR128_ENCRYPT
+#include <openssl/modes.h>
+#endif
+
 #if (OPENSSL_VERSION_NUMBER<0x00907000L)
 #define OLD_CRYPTO
 #endif