Index: trunk/FACT++/src/fitsCompressor.cc
===================================================================
--- trunk/FACT++/src/fitsCompressor.cc	(revision 16809)
+++ trunk/FACT++/src/fitsCompressor.cc	(revision 16810)
@@ -461,13 +461,9 @@
   uint32_t numRows;
   uint64_t size;
-  TileHeader(uint32_t nRows=0, uint64_t s=0)
-  {
-      id[0]='T';
-      id[1]='I';
-      id[2]='L';
-      id[3]='E';
-      numRows=nRows;
-      size=s;
-  };
+  TileHeader(uint32_t nRows=0,
+             uint64_t s=0) : id({'T', 'I', 'L', 'E'}),
+                             numRows(nRows),
+                             size(s)
+  { };
 } __attribute__((__packed__)) TileHeader;