diff --git a/src/plugins/qbsprojectmanager/defaultpropertyprovider.cpp b/src/plugins/qbsprojectmanager/defaultpropertyprovider.cpp
index 1444c3d98f7..3f8f5e84cb3 100644
--- a/src/plugins/qbsprojectmanager/defaultpropertyprovider.cpp
+++ b/src/plugins/qbsprojectmanager/defaultpropertyprovider.cpp
@@ -275,6 +275,8 @@ QVariantMap DefaultPropertyProvider::autoGeneratedProperties(const ProjectExplor
             ProjectExplorer::Abi::abiFromTargetTriplet(mainTc->originalTargetTriple())
             || targetAbi.osFlavor() == ProjectExplorer::Abi::AndroidLinuxFlavor) {
         data.insert(QLatin1String(QBS_ARCHITECTURE), architecture(mainTc->targetAbi()));
+    } else if (archs.count() == 1) {
+        data.insert(QLatin1String(QBS_ARCHITECTURE), archs.first());
     }
     data.insert(QLatin1String(QBS_TARGETPLATFORM), targetPlatform(targetAbi, k));