diff --git a/src/plugins/debugger/gdb/gdbengine.cpp b/src/plugins/debugger/gdb/gdbengine.cpp
index ebcc8c5102a..7aa202bfec8 100644
--- a/src/plugins/debugger/gdb/gdbengine.cpp
+++ b/src/plugins/debugger/gdb/gdbengine.cpp
@@ -1463,7 +1463,7 @@ void GdbEngine::handleStopResponse(const GdbMi &data)
         handleStop1(data);
 }
 
-static QByteArray stopSignal(Abi abi)
+static QByteArray stopSignal(const Abi &abi)
 {
     return (abi.os() == Abi::WindowsOS) ? QByteArray("SIGTRAP") : QByteArray("SIGINT");
 }