diff --git a/tinygrad/runtime/support/nv/nvdev.py b/tinygrad/runtime/support/nv/nvdev.py
index ce25760964..4adcdeb545 100644
--- a/tinygrad/runtime/support/nv/nvdev.py
+++ b/tinygrad/runtime/support/nv/nvdev.py
@@ -66,7 +66,7 @@ class NVPageTableEntry:
     return self.read_fields(entry_id)[f'address{small}{sys}'] << 12
 
 class NVMemoryManager(MemoryManager):
-  va_allocator = TLSFAllocator((1 << 44), base=1 << 30) # global for all devices.
+  va_allocator = TLSFAllocator((1 << 44), base=0x1000000000) # global for all devices.
 
   def on_range_mapped(self): self.dev.NV_VIRTUAL_FUNCTION_PRIV_MMU_INVALIDATE.write((1 << 0) | (1 << 1) | (1 << 6) | (1 << 31))