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-rw-r--r--src/core/ngx_crypt.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/core/ngx_crypt.c b/src/core/ngx_crypt.c
index 029a48529..9564c3618 100644
--- a/src/core/ngx_crypt.c
+++ b/src/core/ngx_crypt.c
@@ -75,7 +75,7 @@ ngx_crypt_apr1(ngx_pool_t *pool, u_char *key, u_char *salt, u_char **encrypted)
ngx_md5_init(&md5);
ngx_md5_update(&md5, key, keylen);
- ngx_md5_update(&md5, "$apr1$", sizeof("$apr1$") - 1);
+ ngx_md5_update(&md5, (u_char *) "$apr1$", sizeof("$apr1$") - 1);
ngx_md5_update(&md5, salt, saltlen);
ngx_md5_init(&ctx1);