diff --git a/Device/InputOutput/OutputDataReadWriteNicos.cpp b/Device/InputOutput/OutputDataReadWriteNicos.cpp
index d61a3f2b2fec0bb351e7a6e0cbdc747d26f6fb47..14ffd17999442f8a93e90a89e72ed902cd68ebd7 100644
--- a/Device/InputOutput/OutputDataReadWriteNicos.cpp
+++ b/Device/InputOutput/OutputDataReadWriteNicos.cpp
@@ -15,6 +15,16 @@
 #include "Device/InputOutput/OutputDataReadWriteNicos.h"
 #include "Base/Util/StringUtils.h"
 
+namespace {
+
+std::string lineRelatedError(const std::string& errorText, int lineNumber)
+{
+    return "Line " + std::to_string(lineNumber) + ": " + errorText;
+}
+
+} // namespace
+
+
 OutputData<double>* OutputDataReadWriteNicos::readOutputData(std::istream& input_stream)
 {
     auto result = std::make_unique<OutputData<double>>(); // as unique ptr to ensure delete on throw
@@ -94,7 +104,8 @@ OutputData<double>* OutputDataReadWriteNicos::readOutputData(std::istream& input
         if (valuesAsString.size() != width)
             throw std::runtime_error(
                 lineRelatedError("Number of found values (" + std::to_string(valuesAsString.size())
-                                 + ") does not match DataSizeX (" + std::to_string(width) + ")."));
+                                 + ") does not match DataSizeX (" + std::to_string(width) + ").",
+                    m_currentLineNr));
 
         for (unsigned col = 0; col < width; ++col) {
             const size_t global_index = result->toGlobalIndex(
@@ -103,8 +114,10 @@ OutputData<double>* OutputDataReadWriteNicos::readOutputData(std::istream& input
 
             int value = 0;
             if (!BaseUtils::String::to_int(valuesAsString[col], &value))
-                throw std::runtime_error(lineRelatedError(
-                    "Value '" + valuesAsString[col] + "' could not be converted to integer."));
+                throw std::runtime_error(
+                    lineRelatedError("Value '" + valuesAsString[col] +
+                                     "' could not be converted to integer.",
+                                     m_currentLineNr));
 
             (*result)[global_index] = value;
         }
@@ -127,20 +140,16 @@ unsigned int OutputDataReadWriteNicos::readAssignedPositiveIntValue(const std::s
 {
     const auto parts = BaseUtils::String::split(line, "=");
     if (parts.size() != 2)
-        throw std::runtime_error(lineRelatedError("Missing assigned value."));
+        throw std::runtime_error(lineRelatedError("Missing assigned value.", m_currentLineNr));
 
     int value = 0;
     if (!BaseUtils::String::to_int(parts[1], &value))
         throw std::runtime_error(
-            lineRelatedError("Can't parse assigned value '" + parts[1] + "'."));
+            lineRelatedError("Can't parse assigned value '" + parts[1] + "'.", m_currentLineNr));
 
     if (value <= 0)
-        throw std::runtime_error(lineRelatedError("Value of '" + parts[1] + "' is nonpositive."));
+        throw std::runtime_error(lineRelatedError("Value of '" + parts[1] + "' is nonpositive.",
+                                     m_currentLineNr));
 
     return value;
 }
-
-std::string OutputDataReadWriteNicos::lineRelatedError(const std::string& errorText) const
-{
-    return "Line " + std::to_string(m_currentLineNr) + ": " + errorText;
-}
diff --git a/Device/InputOutput/OutputDataReadWriteNicos.h b/Device/InputOutput/OutputDataReadWriteNicos.h
index 541c1e63b01a2472feb10a19f816e25f26aa9a52..94540f0d19e08d24d56222fe1cbcb3df5ff2982a 100644
--- a/Device/InputOutput/OutputDataReadWriteNicos.h
+++ b/Device/InputOutput/OutputDataReadWriteNicos.h
@@ -28,9 +28,6 @@ private:
     //! Throws if not successful or if value is nonpositive
     unsigned int readAssignedPositiveIntValue(const std::string& line) const;
 
-    //! Returns errorText with prepended line number (suitable for throwing errors)
-    std::string lineRelatedError(const std::string& errorText) const;
-
     int m_currentLineNr = 0; //!< "1" means "first line" (human readable counting)
 };
 
diff --git a/auto/Wrap/doxygenDevice.i b/auto/Wrap/doxygenDevice.i
index 3a8c257fd45ff2077237b89a2359366f464b9f48..ff32ced498f63dd14e14edd70a9063f7cf394b20 100644
--- a/auto/Wrap/doxygenDevice.i
+++ b/auto/Wrap/doxygenDevice.i
@@ -2121,7 +2121,7 @@ C++ includes: OutputDataReadWriteINT.h
 // File: classOutputDataReadWriteNicos.xml
 %feature("docstring") OutputDataReadWriteNicos "
 
-Read/write Nicos files (*.001).
+Read/write SANSDRaw files written by Nicos (*.001).
 
 C++ includes: OutputDataReadWriteNicos.h
 ";
@@ -2778,6 +2778,9 @@ Returns default units to convert to.
 // File: namespace_0d55.xml
 
 
+// File: namespace_0d61.xml
+
+
 // File: namespace_0d63.xml