diff --git a/src/ANT.cpp b/src/ANT.cpp
index a28597620..08ffad869 100644
--- a/src/ANT.cpp
+++ b/src/ANT.cpp
@@ -504,6 +504,10 @@ ANT::associateControlChannels() {
 bool
 ANT::discover(QString name)
 {
+#ifdef WIN32
+Q_UNUSED(name);
+#endif
+
 #ifdef Q_OS_LINUX
 
     // All we can do for USB1 sticks is see if the cp210x driver module
diff --git a/src/Bin2RideFile.cpp b/src/Bin2RideFile.cpp
index a12cf2859..96961629d 100644
--- a/src/Bin2RideFile.cpp
+++ b/src/Bin2RideFile.cpp
@@ -168,12 +168,12 @@ struct Bin2FileReaderState
         if (alt == 0x8000)
             alt = 0;
 
-        if ((long)lat == -2147483648L) //2147483648
+        if ((long)lat == (long)0x80000000) //2147483648
             lat = 0;
         else
             lat = lat/10000000.0;
 
-        if ((long)lng == -2147483648L) //0x80000000
+        if ((long)lng == (long)0x80000000) //0x80000000
             lng = 0;
         else
             lng = lng/10000000.0;
diff --git a/src/Computrainer.cpp b/src/Computrainer.cpp
index ea0d3b106..8e9fd2875 100644
--- a/src/Computrainer.cpp
+++ b/src/Computrainer.cpp
@@ -939,7 +939,7 @@ int Computrainer::rawRead(uint8_t bytes[], int size)
     int rc=0;
 
 #ifdef WIN32
-
+Q_UNUSED(size);
     // Readfile deals with timeouts and readyread issues
     DWORD cBytes;
     rc = ReadFile(devicePort, bytes, 7, &cBytes, NULL);