From cba5887212ada60f3334579bc3e5a64e8acc5487 Mon Sep 17 00:00:00 2001
From: Dan Nixon <dan@dan-nixon.com>
Date: Wed, 1 Oct 2014 11:07:44 +0100
Subject: [PATCH] Allow single spectra in diagnostics

Refs #10264
---
 .../MantidQt/CustomInterfaces/src/IndirectDiagnostics.cpp       | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Code/Mantid/MantidQt/CustomInterfaces/src/IndirectDiagnostics.cpp b/Code/Mantid/MantidQt/CustomInterfaces/src/IndirectDiagnostics.cpp
index 4a7bc739370e..579b1adc57c0 100644
--- a/Code/Mantid/MantidQt/CustomInterfaces/src/IndirectDiagnostics.cpp
+++ b/Code/Mantid/MantidQt/CustomInterfaces/src/IndirectDiagnostics.cpp
@@ -180,7 +180,7 @@ namespace CustomInterfaces
     }
 
     // Check spectra range
-    auto specRange = std::make_pair(m_dblManager->value(m_properties["SpecMin"]), m_dblManager->value(m_properties["SpecMax"]));
+    auto specRange = std::make_pair(m_dblManager->value(m_properties["SpecMin"]), m_dblManager->value(m_properties["SpecMax"]) + 1);
     uiv.checkValidRange("Spectra Range", specRange);
 
     QString error = uiv.generateErrorMessage();