diff --git a/src/hmac/hmac.cpp b/src/hmac/hmac.cpp
index fb60487..ff3c503 100644
--- a/src/hmac/hmac.cpp
+++ b/src/hmac/hmac.cpp
@@ -4,7 +4,6 @@
  */
 #include "hmac.h"
 
-
 static QByteArray hmac_stage(QCryptographicHash::Algorithm algorithm, char * const keyBuf, int ksize, int blockSize, const char fillPad, const char xorKey, const QByteArray &message)
 {
     QCryptographicHash hash(algorithm);
diff --git a/src/oath/oath.h b/src/oath/oath.h
index cdae55a..612ec67 100644
--- a/src/oath/oath.h
+++ b/src/oath/oath.h
@@ -9,6 +9,7 @@
 #include <QCryptographicHash>
 #include <QDateTime>
 
+#include <functional>
 #include <optional>
 
 namespace oath