Index: src/server/timestamp.h
--- src/server/timestamp.h.orig
+++ src/server/timestamp.h
@@ -7,7 +7,7 @@ extern int timestamp_read(const char *path, char buf[]
 extern int timestamp_write(const char *path, const char *tstmp);
 extern int timestamp_get_new(uint64_t index,
 	char *buf, size_t s, char *bufforfile, size_t bs, const char *format);
-extern long timestamp_to_long(const char *buf);
+extern time_t timestamp_to_long(const char *buf);
 
 #ifdef UTEST
 extern void timestamp_write_to_buf(char *buf, size_t s,
