Index: src/libchcore/TTaskManagerStatsSnapshot.cpp
===================================================================
diff -u -N -r8a2ff3b2b71b45fb525e030167e62f316cb32869 -r294b7d63dfadb4e39fcbb52087983616981d00bd
--- src/libchcore/TTaskManagerStatsSnapshot.cpp	(.../TTaskManagerStatsSnapshot.cpp)	(revision 8a2ff3b2b71b45fb525e030167e62f316cb32869)
+++ src/libchcore/TTaskManagerStatsSnapshot.cpp	(.../TTaskManagerStatsSnapshot.cpp)	(revision 294b7d63dfadb4e39fcbb52087983616981d00bd)
@@ -119,11 +119,13 @@
 			m_dAvgSizeSpeed += spTaskStats->GetAvgSizeSpeed();
 		}
 
+		static_assert(AssumedFileEquivalentSize == TTaskStatsSnapshot::AssumedFileEquivalentSize, "File equivalent sizes differs");
+
 		// we're treating each of the items as 512B object to process
 		// to have some balance between items' count and items' size in
 		// progress information
-		unsigned long long ullProcessed = 512ULL * m_ullProcessedCount + m_ullProcessedSize;
-		unsigned long long ullTotal = 512ULL * m_ullTotalCount + m_ullTotalSize;
+		unsigned long long ullProcessed = AssumedFileEquivalentSize * m_ullProcessedCount + m_ullProcessedSize;
+		unsigned long long ullTotal = AssumedFileEquivalentSize * m_ullTotalCount + m_ullTotalSize;
 
 		if (ullTotal != 0)
 			m_dCombinedProgress = Math::Div64(ullProcessed, ullTotal);