1 files changed, 1 insertions, 0 deletions

diff --git a/include/opkele/util-internal.h b/include/opkele/util-internal.h
index ec091ce..258e129 100644
--- a/include/opkele/util-internal.h
+++ b/include/opkele/util-internal.h
@@ -1,17 +1,18 @@
 #ifndef __OPKELE_UTIL_INTERNAL_H
 #define __OPKELE_UTIL_INTERNAL_H
 
 #include <openssl/bn.h>
 #include <openssl/dh.h>
+#include <opkele/types.h>
 
 namespace opkele {
     namespace util {
 
         /**
          * Convenience class encapsulating SSL BIGNUM object for the purpose of
          * automatical freeing.
          */
         class bignum_t {
             public:
                 BIGNUM *_bn;