diff --git a/src/plugins/cmakeprojectmanager/cmakeproject.cpp b/src/plugins/cmakeprojectmanager/cmakeproject.cpp
index 8be9be049e9..ad4c685d3f5 100644
--- a/src/plugins/cmakeprojectmanager/cmakeproject.cpp
+++ b/src/plugins/cmakeprojectmanager/cmakeproject.cpp
@@ -163,7 +163,7 @@ void CMakeProject::setupBuildPresets(Internal::PresetsData &presetsData)
                 TaskHub::requestPopup();
             }
 
-            const QString &configurePresetName = buildPreset.configurePreset.value();
+            const QString &configurePresetName = buildPreset.configurePreset.value_or(QString());
             buildPreset.environment
                 = Utils::findOrDefault(presetsData.configurePresets,
                                        [configurePresetName](