diff --git a/src/xenia/memory.cc b/src/xenia/memory.cc
index 3eb176e31..ec3a9a47c 100644
--- a/src/xenia/memory.cc
+++ b/src/xenia/memory.cc
@@ -639,7 +639,7 @@ bool BaseHeap::AllocRange(uint32_t low_address, uint32_t high_address,
   uint32_t high_page_number = (high_address - heap_base_) / page_size_;
   low_page_number = std::min(uint32_t(page_table_.size()) - 1, low_page_number);
   high_page_number =
-      std::min(uint32_t(page_table_.size()) - 1, high_page_number);
+      std::min(uint32_t(page_table_.size()) - 1, high_page_number) - page_count;
 
   std::lock_guard<xe::recursive_mutex> lock(heap_mutex_);