diff --git a/src/gc-debug.c b/src/gc-debug.c
index eeb170f0299a1c..742b30e306c76b 100644
--- a/src/gc-debug.c
+++ b/src/gc-debug.c
@@ -580,14 +580,6 @@ JL_NO_ASAN static void gc_scrub_range(char *low, char *high)
         // Make sure the sweep rebuild the freelist
         pg->has_marked = 1;
         pg->has_young = 1;
-        // Find the age bit
-        char *page_begin = gc_page_data(tag) + GC_PAGE_OFFSET;
-        int obj_id = (((char*)tag) - page_begin) / osize;
-        uint32_t *ages = pg->ages + obj_id / 32;
-        // Force this to be a young object to save some memory
-        // (especially on 32bit where it's more likely to have pointer-like
-        //  bit patterns)
-        *ages &= ~(1 << (obj_id % 32));
         memset(tag, 0xff, osize);
         // set mark to GC_MARKED (young and marked)
         tag->bits.gc = GC_MARKED;