diff --git a/PowerEditor/src/WinControls/VerticalFileSwitcher/VerticalFileSwitcher.cpp b/PowerEditor/src/WinControls/VerticalFileSwitcher/VerticalFileSwitcher.cpp
index fcfb045f..ab36c7fc 100644
--- a/PowerEditor/src/WinControls/VerticalFileSwitcher/VerticalFileSwitcher.cpp
+++ b/PowerEditor/src/WinControls/VerticalFileSwitcher/VerticalFileSwitcher.cpp
@@ -121,6 +121,13 @@ INT_PTR CALLBACK VerticalFileSwitcher::run_dlgProc(UINT message, WPARAM wParam,
 				{
 					// Switch to the right document
 					LPNMITEMACTIVATE lpnmitem = (LPNMITEMACTIVATE) lParam;
+
+					if (lpnmitem->hdr.hwndFrom != _fileListView.getHSelf())
+					{
+						// Do nothing
+						return TRUE;
+					}
+
 					int nbItem = ListView_GetItemCount(_fileListView.getHSelf());
 
 					if (nbSelectedFiles() == 1)