diff --git a/include/time.h b/include/time.h
index 70574093..dc880706 100644
--- a/include/time.h
+++ b/include/time.h
@@ -125,7 +125,7 @@ struct tm *getdate (const char *);
 
 
 #if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
-int stime(time_t *);
+int stime(const time_t *);
 time_t timegm(struct tm *);
 #endif
 
diff --git a/src/linux/stime.c b/src/linux/stime.c
index 29a1ec64..7d0443ba 100644
--- a/src/linux/stime.c
+++ b/src/linux/stime.c
@@ -2,7 +2,7 @@
 #include <time.h>
 #include <sys/time.h>
 
-int stime(time_t *t)
+int stime(const time_t *t)
 {
 	struct timeval tv = { .tv_sec = *t, .tv_usec = 0 };
 	return settimeofday(&tv, (void *)0);