diff --git a/novelwriter/guimain.py b/novelwriter/guimain.py
index b7ccfedf5..1732e1137 100644
--- a/novelwriter/guimain.py
+++ b/novelwriter/guimain.py
@@ -1023,9 +1023,10 @@ def _switchFocus(self, paneNo: nwFocus) -> None:
                 self.projView.setTreeFocus()
         elif paneNo == nwFocus.DOCUMENT:
             self._changeView(nwView.EDITOR)
-            if self.docEditor.anyFocus():
+            hasViewer = self.splitView.isVisible()
+            if hasViewer and self.docEditor.anyFocus():
                 self.docViewer.setFocus()
-            elif self.docViewer.anyFocus():
+            elif hasViewer and self.docViewer.anyFocus():
                 self.docEditor.setFocus()
             else:
                 self.docEditor.setFocus()