diff --git a/source/lib/allocators/headerless.cpp b/source/lib/allocators/headerless.cpp
index 7b1f738e0a..f29a1e6d3d 100644
--- a/source/lib/allocators/headerless.cpp
+++ b/source/lib/allocators/headerless.cpp
@@ -539,7 +539,7 @@ public:
 		m_totalDeallocatedBlocks++;
 		m_totalDeallocatedBytes += size;
 		ENSURE(m_totalDeallocatedBlocks <= m_totalAllocatedBlocks);
-		ENSURE(m_totalDeallocatedBytes <= m_totalDeallocatedBytes);
+		ENSURE(m_totalDeallocatedBytes <= m_totalAllocatedBytes);
 
 		ENSURE(m_currentExtantBlocks != 0);
 		ENSURE(m_currentExtantBytes >= size);