diff --git a/doc/Changelog b/doc/Changelog
index def2dbfca..3215249c1 100644
--- a/doc/Changelog
+++ b/doc/Changelog
@@ -1,5 +1,6 @@
 17 June 2019: Wouter
 	- Master contains version 1.9.3 in development.
+	- Fix #39: In libunbound, leftover logfile is close()d unpredictably.
 
 12 June 2019: Wouter
 	- Fix another spoolbuf storage code point, in prefetch.
diff --git a/libunbound/libunbound.c b/libunbound/libunbound.c
index 5f5a8a102..9dd7d6dbe 100644
--- a/libunbound/libunbound.c
+++ b/libunbound/libunbound.c
@@ -328,6 +328,8 @@ ub_ctx_delete(struct ub_ctx* ctx)
 	ub_randfree(ctx->seed_rnd);
 	alloc_clear(&ctx->superalloc);
 	traverse_postorder(&ctx->queries, delq, NULL);
+	if(ctx->logfile_override)
+		log_file(NULL);
 	free(ctx);
 #ifdef USE_WINSOCK
 	WSACleanup();