diff --git a/include/mimalloc/types.h b/include/mimalloc/types.h
index e45da9a7..613bc69c 100644
--- a/include/mimalloc/types.h
+++ b/include/mimalloc/types.h
@@ -337,13 +337,13 @@ typedef struct mi_page_s {
 #endif
 
 // The max object size are checked to not waste more than 12.5% internally over the page sizes.
-#define MI_SMALL_MAX_OBJ_SIZE             ((MI_SMALL_PAGE_SIZE-MI_PAGE_INFO_SIZE)/8)   // < 8 KiB
+#define MI_SMALL_MAX_OBJ_SIZE             ((MI_SMALL_PAGE_SIZE-MI_PAGE_INFO_SIZE)/4)   // < 16 KiB
 #if MI_ENABLE_LARGE_PAGES
-#define MI_MEDIUM_MAX_OBJ_SIZE            ((MI_MEDIUM_PAGE_SIZE-MI_PAGE_INFO_SIZE)/8)  // < 64 KiB
+#define MI_MEDIUM_MAX_OBJ_SIZE            ((MI_MEDIUM_PAGE_SIZE-MI_PAGE_INFO_SIZE)/4)  // < 128 KiB
 #define MI_LARGE_MAX_OBJ_SIZE             (MI_LARGE_PAGE_SIZE/8)    // <= 256 KiB // note: this must be a nice power of 2 or we get rounding issues with `_mi_bin`
 #else
-#define MI_MEDIUM_MAX_OBJ_SIZE            (MI_MEDIUM_PAGE_SIZE/8)   // <= 64 KiB
-#define MI_LARGE_MAX_OBJ_SIZE             MI_MEDIUM_MAX_OBJ_SIZE    // <= 64 KiB // note: this must be a nice power of 2 or we get rounding issues with `_mi_bin`
+#define MI_MEDIUM_MAX_OBJ_SIZE            (MI_MEDIUM_PAGE_SIZE/4)   // <= 128 KiB
+#define MI_LARGE_MAX_OBJ_SIZE             MI_MEDIUM_MAX_OBJ_SIZE    // note: this must be a nice power of 2 or we get rounding issues with `_mi_bin`
 #endif
 #define MI_LARGE_MAX_OBJ_WSIZE            (MI_LARGE_MAX_OBJ_SIZE/MI_SIZE_SIZE)
 
diff --git a/src/options.c b/src/options.c
index 9fcc6ef3..3d34d9b6 100644
--- a/src/options.c
+++ b/src/options.c
@@ -169,8 +169,8 @@ static mi_option_desc_t options[_mi_option_last] =
          UNINIT, MI_OPTION(guarded_sample_rate)},       // 1 out of N allocations in the min/max range will be guarded (=4000)
   { 0,   UNINIT, MI_OPTION(guarded_sample_seed)},
   { 0,   UNINIT, MI_OPTION(target_segments_per_thread) }, // abandon segments beyond this point, or 0 to disable.
-  { 1,   UNINIT, MI_OPTION_LEGACY(reclaim_on_free, abandoned_reclaim_on_free) },// reclaim an abandoned segment on a free
-  { 2,   UNINIT, MI_OPTION(page_full_retain) },
+  { 0,   UNINIT, MI_OPTION_LEGACY(reclaim_on_free, abandoned_reclaim_on_free) },// reclaim an abandoned segment on a free
+  { 0,   UNINIT, MI_OPTION(page_full_retain) },
   { 4,   UNINIT, MI_OPTION(page_max_candidates) },
   { 0,   UNINIT, MI_OPTION(max_vabits) },
   { MI_DEFAULT_PAGEMAP_COMMIT,