Index: /trunk/FACT++/src/fitsCompressor.cc
===================================================================
--- /trunk/FACT++/src/fitsCompressor.cc	(revision 16805)
+++ /trunk/FACT++/src/fitsCompressor.cc	(revision 16806)
@@ -1092,5 +1092,5 @@
         {
             compressedOffset += sizeof(TileHeader);
-            heapSize += compressedOffset;
+            heapSize += sizeof(TileHeader);
             for (uint32_t j=0;j<_catalog[i].size();j++)
             {