diff --git a/Code/Mantid/MantidQt/CustomInterfaces/src/SANSDiagnostics.cpp b/Code/Mantid/MantidQt/CustomInterfaces/src/SANSDiagnostics.cpp
index 22a221e..b3b9b06 100644
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namespace MantidQt |
| 453 | 453 | // if detector id inside the range |
| 454 | 454 | if (detID >= rectDet->getMinimumDetectorId() && detID <= rectDet->getMaximumDetectorId()) |
| 455 | 455 | { |
| 456 | | aux = spec->getSpectrumNo(); |
| | 456 | aux = spec->getSpectrumNo() -1; // to transfor spectrum number into spectrum index |
| 457 | 457 | if (aux > max_spec_index) |
| 458 | 458 | max_spec_index = aux; |
| 459 | 459 | if (aux < min_spec_index) |