diff --git a/src/ecmcDAQDataArray.cpp b/src/ecmcDAQDataArray.cpp
index 92ad296..ee2984c 100644
--- a/src/ecmcDAQDataArray.cpp
+++ b/src/ecmcDAQDataArray.cpp
@@ -143,7 +143,7 @@ void ecmcDAQDataArray::buildArrayHeader(){
     dataStartOffset = dataStartOffset + (*pDataCh)->getDataElementCount(); 
     index++;
     // Forth index spare...
-    buffer_[index] = -1234.0;
+    buffer_[index] = -1;
     index++;
   }
 }