diff --git a/src/screen.c b/src/screen.c
index 5043c0d..1681e1c 100644
--- a/src/screen.c
+++ b/src/screen.c
@@ -567,6 +567,12 @@
     }
 #endif
 
+#ifdef FEAT_DIFF
+    // May have postponed updating diffs.
+    if (need_diff_redraw)
+	diff_redraw(TRUE);
+#endif
+
     if (must_redraw)
     {
 	if (type < must_redraw)	    /* use maximal type */