diff --git a/src/plugins/projectexplorer/target.cpp b/src/plugins/projectexplorer/target.cpp
index b1ff917bf75..e46f259f8a3 100644
--- a/src/plugins/projectexplorer/target.cpp
+++ b/src/plugins/projectexplorer/target.cpp
@@ -238,6 +238,15 @@ BuildTargetInfo Target::buildTarget(const QString &buildKey) const
     return buildSystem()->buildTarget(buildKey);
 }
 
+QString Target::activeBuildKey() const
+{
+    // Should not happen. If it does, return a buildKey that wont be found in
+    // the project tree, so that the project()->findNodeForBuildKey(buildKey)
+    // returns null.
+    QTC_ASSERT(d->m_activeRunConfiguration, return QString(QChar(0)));
+    return d->m_activeRunConfiguration->buildKey();
+}
+
 Core::Id Target::id() const
 {
     return d->m_kit->id();
diff --git a/src/plugins/projectexplorer/target.h b/src/plugins/projectexplorer/target.h
index 34d48e78e8a..26be1fb988c 100644
--- a/src/plugins/projectexplorer/target.h
+++ b/src/plugins/projectexplorer/target.h
@@ -123,6 +123,8 @@ public:
     DeploymentData buildSystemDeploymentData() const;
     BuildTargetInfo buildTarget(const QString &buildKey) const;
 
+    QString activeBuildKey() const; // Build key of active run configuaration
+
 signals:
     void targetEnabled(bool);
     void iconChanged();