diff --git a/graphics/VP1/VP1Utils/VP1Utils/VP1SGAccessHelper.icc b/graphics/VP1/VP1Utils/VP1Utils/VP1SGAccessHelper.icc
index 3daa27c37e284d1eb188a5a8b4ad6c183eb36474..ebe2342413a19206ea0b3fc9671c492594bccb8d 100644
--- a/graphics/VP1/VP1Utils/VP1Utils/VP1SGAccessHelper.icc
+++ b/graphics/VP1/VP1Utils/VP1Utils/VP1SGAccessHelper.icc
@@ -30,7 +30,7 @@ inline const T* VP1SGAccessHelper::retrieve( const QString& key ) const
   try {
     t = storeGate()->retrieve<const T>(key.toStdString());
     exception = false;
-  } catch (std::runtime_error e) {
+  } catch (const std::runtime_error& e) {
     exception = true;
     t = 0;
   }
diff --git a/graphics/VP1/VP1Utils/src/VP1SGContentsHelper.cxx b/graphics/VP1/VP1Utils/src/VP1SGContentsHelper.cxx
index 53e8201fbf94441fccd70a69741ead898ff10229..c45bafabe116968a9070c73dd1ccaf85fe186118 100644
--- a/graphics/VP1/VP1Utils/src/VP1SGContentsHelper.cxx
+++ b/graphics/VP1/VP1Utils/src/VP1SGContentsHelper.cxx
@@ -56,7 +56,7 @@ bool VP1SGContentsHelper::contains( const CLID& id, const QString& key ) const
   try {
     contains = m_sg->contains(id,key.toStdString());
     exception = false;
-  } catch (std::runtime_error e) {
+  } catch (const std::runtime_error& e) {
     exception = true;
   }
   if (exception) {
@@ -84,7 +84,7 @@ QStringList VP1SGContentsHelper::getKeys(const CLID& id) const
   try {
     keys = m_sg->keys(id);
     exception = false;
-  } catch (std::runtime_error e) {
+  } catch (const std::runtime_error& e) {
     exception = true;
   }
   if (exception) {