diff --git a/src/plugins/projectexplorer/gcctoolchain.cpp b/src/plugins/projectexplorer/gcctoolchain.cpp
index 061636cf427..e4f4098c5ff 100644
--- a/src/plugins/projectexplorer/gcctoolchain.cpp
+++ b/src/plugins/projectexplorer/gcctoolchain.cpp
@@ -1277,7 +1277,7 @@ public:
         m_overrideCheckBox.setText(tr("Override for code model"));
         m_overrideCheckBox.setToolTip(tr("Check this button in the rare case that the code model\n"
                 "fails because clang does not understand the target architecture."));
-        layout->addWidget(&m_tripleLineEdit);
+        layout->addWidget(&m_tripleLineEdit, 1);
         layout->addWidget(&m_overrideCheckBox);
         layout->addStretch(1);