diff --git a/Configuration.cpp b/Configuration.cpp
index 27538f734..c42768b82 100644
--- a/Configuration.cpp
+++ b/Configuration.cpp
@@ -1124,7 +1124,7 @@ QString Configuration::OTPUrl() const
   return m_->OTPUrl_;
 }
 
-u_int Configuration::OTPinterval() const
+unsigned int Configuration::OTPinterval() const
 {
   return m_->OTPinterval_;
 }
diff --git a/Configuration.hpp b/Configuration.hpp
index 87281b310..4d801b9cf 100644
--- a/Configuration.hpp
+++ b/Configuration.hpp
@@ -198,7 +198,7 @@ public:
   QString OTPSeed() const;
   QString OTPUrl() const;
   bool OTPEnabled() const;
-  u_int OTPinterval() const;
+  unsigned int OTPinterval() const;
 //                                      0       1      2         3       4       5      6     7        8           9
   enum class SpecialOperatingActivity {NONE, NA_VHF, EU_VHF, FIELD_DAY, RTTY, WW_DIGI, FOX, HOUND, ARRL_DIGI, Q65_PILEUP};
   SpecialOperatingActivity special_op_id () const;
diff --git a/Network/FoxVerifier.hpp b/Network/FoxVerifier.hpp
index 920fbf0bf..d3bb711cc 100644
--- a/Network/FoxVerifier.hpp
+++ b/Network/FoxVerifier.hpp
@@ -7,6 +7,7 @@
 #include <QPointer>
 #include <QtNetwork/QNetworkAccessManager>
 #include <QtNetwork/QNetworkReply>
+#include <QMutex>
 
 #define FOXVERIFIER_DEFAULT_TIMEOUT_MSEC 5000
 #define FOXVERIFIER_DEFAULT_BASE_URL "https://www.9dx.cc"