diff --git a/eo/src/utils/eoGnuplot1DSnapshot.h b/eo/src/utils/eoGnuplot1DSnapshot.h
index 5bb0b676e..a8a967b24 100644
--- a/eo/src/utils/eoGnuplot1DSnapshot.h
+++ b/eo/src/utils/eoGnuplot1DSnapshot.h
@@ -149,6 +149,7 @@ inline eoMonitor&   eoGnuplot1DSnapshot::operator() (void)
 #ifdef HAVE_SSTREAM
   PipeComSend( gpCom, os.str().c_str());
 #else
+  os << std::ends;
   PipeComSend( gpCom, buff );
 #endif
   return (*this);