diff --git a/core/divelist.c b/core/divelist.c
index 09e3f372a..c3385920d 100644
--- a/core/divelist.c
+++ b/core/divelist.c
@@ -1314,15 +1314,6 @@ int get_dive_nr_at_idx(int idx)
 	return last_dive->number ? last_dive->number + 1 : 0;
 }
 
-void set_dive_nr_for_current_dive()
-{
-	int selected_dive = get_divenr(current_dive);
-	if (dive_table.nr == 1)
-		current_dive->number = 1;
-	else if (selected_dive == dive_table.nr - 1 && get_dive(dive_table.nr - 2)->number)
-		current_dive->number = get_dive(dive_table.nr - 2)->number + 1;
-}
-
 static int min_datafile_version;
 
 int get_min_datafile_version()
diff --git a/core/divelist.h b/core/divelist.h
index ce062b515..e65e94dfc 100644
--- a/core/divelist.h
+++ b/core/divelist.h
@@ -53,7 +53,6 @@ extern void get_dive_gas(const struct dive *dive, int *o2_p, int *he_p, int *o2l
 extern int get_divenr(const struct dive *dive);
 extern int remove_dive(const struct dive *dive, struct dive_table *table);
 extern int get_dive_nr_at_idx(int idx);
-extern void set_dive_nr_for_current_dive();
 extern timestamp_t get_surface_interval(timestamp_t when);
 extern void delete_dive_from_table(struct dive_table *table, int idx);
 extern struct dive *find_next_visible_dive(timestamp_t when);