diff --git a/src/directorymergewindow.cpp b/src/directorymergewindow.cpp
index 8c6d810dcf1e82a2fd1cff52705ea5b906c6ed81..6c10b2b6dec67fe0653919aa59712e9bf24efb38 100644
--- a/src/directorymergewindow.cpp
+++ b/src/directorymergewindow.cpp
@@ -3445,13 +3445,13 @@ void DirectoryMergeWindow::updateAvailabilities(bool bDirCompare, bool bDiffWind
 
     d->m_pDirRescan->setEnabled(bDirCompare);
 
+    bool bThreeDirs = d->isThreeWay();
     d->m_pDirAutoChoiceEverywhere->setEnabled(bDirCompare && isVisible());
     d->m_pDirDoNothingEverywhere->setEnabled(bDirCompare && isVisible());
     d->m_pDirChooseAEverywhere->setEnabled(bDirCompare && isVisible());
     d->m_pDirChooseBEverywhere->setEnabled(bDirCompare && isVisible());
-    d->m_pDirChooseCEverywhere->setEnabled(bDirCompare && isVisible());
+    d->m_pDirChooseCEverywhere->setEnabled(bDirCompare && isVisible() && bThreeDirs);
 
-    bool bThreeDirs = d->isThreeWay();
 
     MergeFileInfos* pMFI = d->getMFI(currentIndex());