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-rw-r--r--fetchmail.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/fetchmail.h b/fetchmail.h
index 933a7cbe..c8989a04 100644
--- a/fetchmail.h
+++ b/fetchmail.h
@@ -247,7 +247,7 @@ void error_at_line ();
/* driver.c: transaction support */
#if defined(HAVE_STDARG_H)
-void gen_send (int sock, char *, ... );
+void gen_send (int sock, const char *, ... );
int gen_recv(int sock, char *buf, int size);
int gen_transact (int sock, char *, ... );
#else