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-rw-r--r--src/common/util.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/common/util.h b/src/common/util.h
index ba318585..bb377fc8 100644
--- a/src/common/util.h
+++ b/src/common/util.h
@@ -76,7 +76,7 @@ void canonalize_key (char *key);
 int portable_mode (void);
 int unity_mode (void);
 char *encode_sasl_pass_plain (char *user, char *pass);
-char *challengeauth_response (char *username, char *password, char *challenge);
+char *challengeauth_response (const char *username, const char *password, const char *challenge);
 size_t strftime_validated (char *dest, size_t destsize, const char *format, const struct tm *time);
 gsize strftime_utf8 (char *dest, gsize destsize, const char *format, time_t time);
 #endif