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-rw-r--r--source3/lib/genrand.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/source3/lib/genrand.c b/source3/lib/genrand.c
index ee8bc0b1d5..fe756169a6 100644
--- a/source3/lib/genrand.c
+++ b/source3/lib/genrand.c
@@ -259,7 +259,7 @@ char *generate_random_str(size_t len)
len = sizeof(retstr) -1;
generate_random_buffer( retstr, len, False);
for (i = 0; i < len; i++)
- retstr[i] = c_list[ retstr[i] % sizeof(c_list) ];
+ retstr[i] = c_list[ retstr[i] % (sizeof(c_list)-1) ];
retstr[i] = '\0';