diff --git a/src/qgcunittest/PX4RCCalibrationTest.cc b/src/qgcunittest/PX4RCCalibrationTest.cc
index c0225a54f16c4f0736b84cad61fcd70642df3254..72c9981d44e0cabe5163d80285361c6e063b20d8 100644
--- a/src/qgcunittest/PX4RCCalibrationTest.cc
+++ b/src/qgcunittest/PX4RCCalibrationTest.cc
@@ -711,7 +711,7 @@ void PX4RCCalibrationTest::_validateWidgets(int validateMask, const struct Chann
         }
     }
     
-    for (int chan=_availableChannels; chan<=PX4RCCalibration::_chanMax; chan++) {
+    for (int chan=_availableChannels; chan<PX4RCCalibration::_chanMax; chan++) {
         QCOMPARE(_rgRadioWidget[chan]->isEnabled(), false);
     }
 }
\ No newline at end of file