diff --git a/src/util/time.c b/src/util/time.c
index 6f26c838..8cf5d3f9 100644
--- a/src/util/time.c
+++ b/src/util/time.c
@@ -90,7 +90,7 @@ timeval_sub(timeval_T *res, timeval_T *older, timeval_T *newer)
 
 /** @relates timeval_T */
 timeval_T *
-timeval_add(timeval_T *res, timeval_T *base, timeval_T *t)
+el_timeval_add(timeval_T *res, timeval_T *base, timeval_T *t)
 {
 	res->sec  = base->sec + t->sec;
 	res->usec = base->usec + t->usec;
diff --git a/src/util/time.h b/src/util/time.h
index 6b695c33..7cbf0f39 100644
--- a/src/util/time.h
+++ b/src/util/time.h
@@ -49,7 +49,7 @@ int timeval_is_positive(timeval_T *t);
 void timeval_limit_to_zero_or_one(timeval_T *t);
 timeval_T *timeval_now(timeval_T *t);
 timeval_T *timeval_sub(timeval_T *res, timeval_T *older, timeval_T *newer);
-timeval_T *timeval_add(timeval_T *res, timeval_T *base, timeval_T *t);
+timeval_T *el_timeval_add(timeval_T *res, timeval_T *base, timeval_T *t);
 int timeval_cmp(timeval_T *t1, timeval_T *t2);
 timeval_T *timeval_sub_interval(timeval_T *t, timeval_T *interval);
 timeval_T *timeval_add_interval(timeval_T *t, timeval_T *interval);