1 files changed, 2 insertions, 0 deletions

diff --git a/mandoc.c b/mandoc.c
index f74e32a7..3ae01d66 100644
--- a/mandoc.c
+++ b/mandoc.c
@@ -480,6 +480,8 @@ time2a(time_t t)
 	int		 isz;
 
 	tm = localtime(&t);
+	if (tm == NULL)
+		return(NULL);
 
 	/*
 	 * Reserve space: