diff --git a/src/project/projecttab.cpp b/src/project/projecttab.cpp
--- a/src/project/projecttab.cpp
+++ b/src/project/projecttab.cpp
@@ -349,6 +349,15 @@
 {
     QStringList files = m_browser->selectedItems();
     int i = files.size();
+
+    if (i > 5) {
+        QString question = i18np("Are you sure you want to open 1 item?", "Are you sure you want to open %1 items?", i);
+        const int answer = KMessageBox::warningYesNo(this, question);
+        if (answer != KMessageBox::Yes) {
+            return;
+        }
+    }
+
     while (--i >= 0) {
         if (Catalog::extIsSupported(files.at(i)))  {
             emit fileOpenRequested(files.at(i), true);