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-rw-r--r--src/common/tortls.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/common/tortls.c b/src/common/tortls.c
index 78dea3b944..c685c12803 100644
--- a/src/common/tortls.c
+++ b/src/common/tortls.c
@@ -294,7 +294,7 @@ tor_tls_context_new(crypto_pk_env_t *identity,
char nn2[1024];
int client_only;
SSL_CTX **ctx;
- sprintf(nn2, "%s <identity>", nickname);
+ sprintf(nn2, "%s <identity>", nickname ? nickname : "null");
tor_tls_init();