diff --git a/src/Sicobject.H b/src/Sicobject.H
index 760b7cc..3ba8779 100644
--- a/src/Sicobject.H
+++ b/src/Sicobject.H
@@ -2,6 +2,8 @@
 
 #include <string>
 #include <ctime>
+#include <sstream>
+#include <iostream>
 #include <cassert>
 
 #include "Sicmaster.H"
@@ -44,7 +46,7 @@ class Sicobject
 
 		std::string bytesize_string()
 		{
-
+			std::ostringstream strm( std::ios_base::ate);
 			int i = 0;
 			size_t size = _size;
 			const char* units[] = {"B", "kB", "MB", "GB", "TB", "PB", "EB", "ZB", "YB"};
@@ -53,9 +55,8 @@ class Sicobject
 				i++;
 			}
 			assert(i < 9);
-			std::string output = "" ;//FIXME... muss mittagessen gehen
-// do this c++11 style:	sprintf(buf, "%.*f %s", i, size, units[i]);
-			return output;
+			strm << size << units[i];
+			return strm.str();
 		}