Index: /trunk/FACT++/src/EventBuilderWrapper.h
===================================================================
--- /trunk/FACT++/src/EventBuilderWrapper.h	(revision 10964)
+++ /trunk/FACT++/src/EventBuilderWrapper.h	(revision 10965)
@@ -148,5 +148,5 @@
     void WriteBlockHeader(uint32_t type, uint32_t ver, uint32_t cnt, uint32_t len)
     {
-        const uint32_t val[4] = { ver, type, cnt, len };
+        const uint32_t val[4] = { type, ver, cnt, len };
 
         fOut.write(reinterpret_cast<const char*>(val), sizeof(val));