diff --git a/src/ui/MainWindow.py b/src/ui/MainWindow.py
index ce2ebac..26a100e 100644
--- a/src/ui/MainWindow.py
+++ b/src/ui/MainWindow.py
@@ -1324,10 +1324,10 @@ class MainWindow(QMainWindow):
         icon_label = QLabel()
         icon_label.setPixmap(QIcon.fromTheme("document-preview").pixmap(16, 16))
         icon_label.setCursor(QCursor(Qt.CursorShape.PointingHandCursor))
-        icon_label.setToolTip("Diff-PDF in Viewer laden (Doppelklick)")
+        icon_label.setToolTip("Diff-PDF in Viewer laden")
 
-        # Klick-Event für Icon (Doppelklick lädt PDF in Viewer)
-        icon_label.mouseDoubleClickEvent = lambda event: self._load_pdf_for_comparison(xml_file_path, xsl_id_str)
+        # Klick-Event für Icon (Einfacher Klick lädt PDF in Viewer)
+        icon_label.mousePressEvent = lambda event: self._load_pdf_for_comparison(xml_file_path, xsl_id_str)
 
         layout.addWidget(icon_label)