diff --git a/src/plugins/cmakeprojectmanager/configmodel.cpp b/src/plugins/cmakeprojectmanager/configmodel.cpp
index 287615650ca..a274c5a89ea 100644
--- a/src/plugins/cmakeprojectmanager/configmodel.cpp
+++ b/src/plugins/cmakeprojectmanager/configmodel.cpp
@@ -508,10 +508,11 @@ void ConfigModel::generateTree()
     auto root = new Utils::TreeItem;
     for (InternalDataItem &di : m_configuration) {
         auto it = initialHash.find(di.key);
+        Utils::MacroExpander *expander = macroExpander();
         if (it != initialHash.end())
-            di.initialValue = it->expandedValue(macroExpander());
+            di.initialValue = it->expandedValue(expander);
 
-        root->appendChild(new Internal::ConfigModelTreeItem(&di));
+        root->appendChild(new Internal::ConfigModelTreeItem(&di, expander));
     }
     setRootItem(root);
 }
@@ -673,11 +674,17 @@ QString ConfigModelTreeItem::toolTip() const
         tooltip << dataItem->description;
 
     const QString pattern = "<dt style=\"font-weight:bold\">%1</dt><dd>%2</dd>";
+    const QString value = dataItem->currentValue();
     if (dataItem->isInitial) {
         if (!dataItem->kitValue.isEmpty())
             tooltip << pattern.arg(Tr::tr("Kit:")).arg(dataItem->kitValue);
 
-        tooltip << pattern.arg(Tr::tr("Initial Configuration:")).arg(dataItem->currentValue());
+        tooltip << pattern.arg(Tr::tr("Initial Configuration:")).arg(value);
+
+        const QString expandedValue = dataItem->expandedValue(m_macroExpander);
+        const bool showExpanded = expandedValue != value;
+        if (showExpanded)
+            tooltip << pattern.arg(Tr::tr("Expands to:")).arg(expandedValue);
     } else {
         if (!dataItem->initialValue.isEmpty()) {
             tooltip << pattern.arg(Tr::tr("Initial Configuration:"))
@@ -685,7 +692,7 @@ QString ConfigModelTreeItem::toolTip() const
         }
 
         if (dataItem->inCMakeCache) {
-            tooltip << pattern.arg(Tr::tr("Current Configuration:")).arg(dataItem->currentValue());
+            tooltip << pattern.arg(Tr::tr("Current Configuration:")).arg(value);
         } else {
             tooltip << pattern.arg(Tr::tr("Not in CMakeCache.txt")).arg(QString());
         }
diff --git a/src/plugins/cmakeprojectmanager/configmodel.h b/src/plugins/cmakeprojectmanager/configmodel.h
index e70cac3bbec..0e3de71cb77 100644
--- a/src/plugins/cmakeprojectmanager/configmodel.h
+++ b/src/plugins/cmakeprojectmanager/configmodel.h
@@ -123,7 +123,10 @@ private:
 class ConfigModelTreeItem  : public Utils::TreeItem
 {
 public:
-    ConfigModelTreeItem(ConfigModel::InternalDataItem *di = nullptr) : dataItem(di) {}
+    ConfigModelTreeItem(ConfigModel::InternalDataItem *di, Utils::MacroExpander *macroExpander)
+        : dataItem(di)
+        , m_macroExpander(macroExpander)
+    {}
     ~ConfigModelTreeItem() override;
 
     QVariant data(int column, int role) const final;
@@ -134,6 +137,9 @@ public:
     QString currentValue() const;
 
     ConfigModel::InternalDataItem *dataItem;
+
+private:
+    Utils::MacroExpander *m_macroExpander = nullptr;
 };
 
 } // CMakeProjectManager::Internal