diff --git a/include/util/time.h b/include/util/time.h
index 287698de..890fe55f 100644
--- a/include/util/time.h
+++ b/include/util/time.h
@@ -6,7 +6,7 @@
 /**
  * Get the current time, in milliseconds.
  */
-uint32_t get_current_time_msec(void);
+int64_t get_current_time_msec(void);
 
 /**
  * Convert a timespec to milliseconds.
diff --git a/util/time.c b/util/time.c
index 06e42b40..c561d23a 100644
--- a/util/time.c
+++ b/util/time.c
@@ -15,7 +15,7 @@ void timespec_from_nsec(struct timespec *r, int64_t nsec) {
 	r->tv_nsec = nsec % NSEC_PER_SEC;
 }
 
-uint32_t get_current_time_msec(void) {
+int64_t get_current_time_msec(void) {
 	struct timespec now;
 	clock_gettime(CLOCK_MONOTONIC, &now);
 	return timespec_to_msec(&now);