diff --git a/src/xenia/memory.cc b/src/xenia/memory.cc
index 1e342dfc9..2b48091d3 100644
--- a/src/xenia/memory.cc
+++ b/src/xenia/memory.cc
@@ -831,7 +831,9 @@ bool BaseHeap::Alloc(uint32_t size, uint32_t alignment,
   size = xe::round_up(size, page_size_);
   alignment = xe::round_up(alignment, page_size_);
   uint32_t low_address = heap_base_;
-  uint32_t high_address = heap_base_ + (heap_size_ - 1);
+  uint32_t high_address =
+      heap_base_ + (heap_size_ - 1) -
+      (heap_type_ == HeapType::kGuestVirtual ? 0x10000000 : 0);
   return AllocRange(low_address, high_address, size, alignment, allocation_type,
                     protect, top_down, out_address);
 }