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-rw-r--r--builtin-log.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/builtin-log.c b/builtin-log.c
index f4975cf35..911fd6599 100644
--- a/builtin-log.c
+++ b/builtin-log.c
@@ -461,7 +461,7 @@ static int extra_cc_alloc;
static void add_header(const char *value)
{
int len = strlen(value);
- while (value[len - 1] == '\n')
+ while (len && value[len - 1] == '\n')
len--;
if (!strncasecmp(value, "to: ", 4)) {
ALLOC_GROW(extra_to, extra_to_nr + 1, extra_to_alloc);