diff --git a/src/screen.c b/src/screen.c
index ee61a01..016e7ee 100644
--- a/src/screen.c
+++ b/src/screen.c
@@ -3650,7 +3650,7 @@
 		if (fdc > 0)
 		{
 		    /* Draw the 'foldcolumn'.  Allocate a buffer, "extra" may
-		     * already be in used. */
+		     * already be in use. */
 		    p_extra_free = alloc(12 + 1);
 
 		    if (p_extra_free != NULL)
@@ -10344,6 +10344,8 @@
 #endif
 					    );
 
+    if (ScreenLines == NULL)
+	return;
     redraw_tabline = FALSE;
 
 #ifdef FEAT_GUI_TABLINE