diff --git a/pkg/urbit/vere/disk.c b/pkg/urbit/vere/disk.c
index 4ef09546d5..a8dc413a10 100644
--- a/pkg/urbit/vere/disk.c
+++ b/pkg/urbit/vere/disk.c
@@ -751,10 +751,11 @@ u3_disk_init(c3_c* pax_c, u3_disk_cb cb_u)
     //  "[..] on 64-bit there is no penalty for making this huge (say 1TB)."
     //
     {
+      const size_t siz_i =
       #if (defined(U3_CPU_aarch64) && defined(U3_OS_linux)) || defined(U3_OS_mingw)
-        const size_t siz_i = 64424509440;
+        0xf00000000;
       #else
-        const size_t siz_i = 1099511627776;
+        0x10000000000;
       #endif
 
       if ( 0 == (log_u->mdb_u = u3_lmdb_init(log_c, siz_i)) ) {