1 files changed, 1 insertions, 0 deletions

diff --git a/lib/util.cc b/lib/util.cc
index 94e09ed..26be66a 100644
--- a/lib/util.cc
+++ b/lib/util.cc
@@ -1,18 +1,19 @@
 #include <errno.h>
 #include <cassert>
+#include <cstring>
 #include <vector>
 #include <string>
 #include <openssl/bio.h>
 #include <openssl/evp.h>
 #include <curl/curl.h>
 #include "opkele/util.h"
 #include "opkele/exception.h"
 
 namespace opkele {
     using namespace std;
 
     namespace util {
 
         /*
          * base64
          */