diff --git a/src/OverteClient.cpp b/src/OverteClient.cpp
index 5460ebb..0de374e 100644
--- a/src/OverteClient.cpp
+++ b/src/OverteClient.cpp
@@ -23,6 +23,8 @@
 #include <cstring>
 #include <zlib.h>
 #include <endian.h>
+#include <openssl/hmac.h>
+#include <openssl/md5.h>
 
 using namespace std::chrono_literals;
 using namespace Overte;