1 files changed, 1 insertions, 0 deletions

diff --git a/src/nsterm.m b/src/nsterm.m
index 03754e5ae53..c1d1d411176 100644
--- a/src/nsterm.m
+++ b/src/nsterm.m
@@ -1644,6 +1644,7 @@ ns_free_frame_resources (struct frame *f)
   [view release];
 
   xfree (f->output_data.ns);
+  f->output_data.ns = NULL;
 
   unblock_input ();
 }