diff --git a/radio/src/targets/simu/opentxsimulator.cpp b/radio/src/targets/simu/opentxsimulator.cpp
index e7260e39c..97ca3efc0 100644
--- a/radio/src/targets/simu/opentxsimulator.cpp
+++ b/radio/src/targets/simu/opentxsimulator.cpp
@@ -284,6 +284,9 @@ void OpenTxSimulator::rotaryEncoderEvent(int steps)
     key = KEY_MINUS;
   else if (steps < 0)
     key = KEY_PLUS;
+  else
+   // Should not happen but Clang complains that key is unset otherwise
+   return;
 
   setKey(key, 1);
 #if (QT_VERSION >= QT_VERSION_CHECK(5, 4, 0))