diff --git a/Code/Mantid/Framework/DataHandling/src/SaveToSNSHistogramNexus.cpp b/Code/Mantid/Framework/DataHandling/src/SaveToSNSHistogramNexus.cpp
index 5199815d7124..2db400089273 100644
--- a/Code/Mantid/Framework/DataHandling/src/SaveToSNSHistogramNexus.cpp
+++ b/Code/Mantid/Framework/DataHandling/src/SaveToSNSHistogramNexus.cpp
@@ -39,7 +39,7 @@ using namespace DataObjects;
 using namespace Geometry;
 
 /// Empty default constructor
-SaveToSNSHistogramNexus::SaveToSNSHistogramNexus() : Algorithm() {}
+SaveToSNSHistogramNexus::SaveToSNSHistogramNexus() : Algorithm(), prog(), m_compress(false), links_count(0), inId(), outId() {}
 
 /** Initialisation method.
  *