diff --git a/src/gui.c b/src/gui.c
index 8e7b079..86c40de 100644
--- a/src/gui.c
+++ b/src/gui.c
@@ -4478,13 +4478,15 @@
     /*
      * Don't call updateWindow() when nothing has changed (it will overwrite
      * the status line!).
+     *
+     * Check for ScreenLines, because in ex-mode, we don't have a valid display.
      */
-    if (old_topline != wp->w_topline
+    if (ScreenLines != NULL && (old_topline != wp->w_topline
 	    || wp->w_redr_type != 0
 #ifdef FEAT_DIFF
 	    || old_topfill != wp->w_topfill
 #endif
-	    )
+	    ))
     {
 	int type = UPD_VALID;
 
diff --git a/src/testdir/crash/ex_redraw_crash b/src/testdir/crash/ex_redraw_crash
new file mode 100644
index 0000000..eda294c
--- /dev/null
+++ b/src/testdir/crash/ex_redraw_crash
Binary files differ
diff --git a/src/testdir/test_crash.vim b/src/testdir/test_crash.vim
index bfd04ff..c83ddf2 100644
--- a/src/testdir/test_crash.vim
+++ b/src/testdir/test_crash.vim
@@ -234,6 +234,12 @@
   call term_sendkeys(buf, args)
   call TermWait(buf, 50)
 
+  let file = 'crash/ex_redraw_crash'
+  let cmn_args = "%s -u NONE -i NONE -n -m -X -Z -e -s -S %s -c ':qa!'"
+  let args = printf(cmn_args, vim, file)
+  call term_sendkeys(buf, args)
+  call TermWait(buf, 150)
+
   " clean up
   exe buf .. "bw!"
   bw!
diff --git a/src/version.c b/src/version.c
index 286cbec..7a2e5a8 100644
--- a/src/version.c
+++ b/src/version.c
@@ -705,6 +705,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1043,
+/**/
     1042,
 /**/
     1041,