From 3899c4e9aa3867b889f79716f5d8fba8cfd76056 Mon Sep 17 00:00:00 2001
From: Danny Hindson <danny.hindson@stfc.ac.uk>
Date: Mon, 23 Mar 2020 22:20:57 +0000
Subject: [PATCH] Only set material's attenuation filename if not blank

---
 Framework/Kernel/src/MaterialBuilder.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/Framework/Kernel/src/MaterialBuilder.cpp b/Framework/Kernel/src/MaterialBuilder.cpp
index 5947206214b..358e8e2b0c9 100644
--- a/Framework/Kernel/src/MaterialBuilder.cpp
+++ b/Framework/Kernel/src/MaterialBuilder.cpp
@@ -217,7 +217,9 @@ MaterialBuilder &MaterialBuilder::setAbsorptionXSection(double xsec) {
  */
 MaterialBuilder &
 MaterialBuilder::setAttenuationProfileFilename(std::string filename) {
-  m_attenuationProfileFileName = filename;
+  if (!filename.empty()) {
+    m_attenuationProfileFileName = filename;
+  }
   return *this;
 }
 
-- 
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