diff --git a/src/VehicleSetup/FirmwareUpgradeController.cc b/src/VehicleSetup/FirmwareUpgradeController.cc
index b1d776a4a7de9601938ee41e0ade0b11f4d8e162..916fa7d12ba307d5fa06af5f0d07dccab11a276a 100644
--- a/src/VehicleSetup/FirmwareUpgradeController.cc
+++ b/src/VehicleSetup/FirmwareUpgradeController.cc
@@ -278,7 +278,7 @@ void FirmwareUpgradeController::_initFirmwareHash()
 #endif
 
     QString px4Url          ("http://px4-travis.s3.amazonaws.com/Firmware/%1/px4fmu-%2_default.px4");
-    QString apmUrl          ("http://firmware.ardupilot.org/%1/%2/%3/%4-%5.px4");
+    QString apmUrl          ("http://firmware.ardupilot.org/%1/%2/%3/%4-v%5.px4");
     QString apmChibiOSUrl   ("http://firmware.ardupilot.org/%1/%2/fmuv%3%4/%5.apj");
 
     QMap<FirmwareType_t, QString> px4MapFirmwareTypeToDir;