diff --git a/include/cyclone/types.h b/include/cyclone/types.h
index bdfc268d..b27d99c0 100644
--- a/include/cyclone/types.h
+++ b/include/cyclone/types.h
@@ -315,7 +315,7 @@ void *gc_alloc(gc_heap_root * h, size_t size, char *obj, gc_thread_data * thd,
 void *gc_alloc_bignum(gc_thread_data *data);
 size_t gc_allocated_bytes(object obj, gc_free_list * q, gc_free_list * r);
 gc_heap *gc_heap_last(gc_heap * h);
-size_t gc_heap_total_size(gc_heap * h);
+//size_t gc_heap_total_size(gc_heap * h);
 //size_t gc_heap_total_free_size(gc_heap *h);
 //size_t gc_collect(gc_heap *h, size_t *sum_freed);
 //void gc_mark(gc_heap *h, object obj);
diff --git a/runtime.c b/runtime.c
index c87eb639..b9f99882 100644
--- a/runtime.c
+++ b/runtime.c
@@ -259,6 +259,10 @@ static bool set_insert(ck_hs_t * hs, const void *value)
 
 // End supporting functions
 
+/**
+ * @brief Perform one-time heap initializations for the program
+ * @param heap_size Unused
+ */
 void gc_init_heap(long heap_size)
 {
   if (!ck_hs_init(&symbol_table,