diff --git a/Sim/Export/SimulationToPython.cpp b/Sim/Export/SimulationToPython.cpp
index 8bfc5fd85469871afb31dc767f087df35f39f7f2..1f2a35694b1d7b91f5e48836ab5b7bdb701ede10 100644
--- a/Sim/Export/SimulationToPython.cpp
+++ b/Sim/Export/SimulationToPython.cpp
@@ -97,12 +97,12 @@ std::string defineAlphaScan(const AlphaScan& scan)
     if (const auto* r = scan.angleResolution(); r && r->rdistribution()) {
         result << Py::Fmt2::printRangedDistribution(*r->rdistribution()) << "\n";
         result << indent() << "scan.setAbsoluteAngularResolution(distribution, "
-               << Py::Fmt::printDouble(r->delta()) << ")\n";
+               << Py::Fmt::printDouble(r->stdDev()) << ")\n";
     }
     if (const auto* r = scan.wavelengthResolution(); r && r->rdistribution()) {
         result << Py::Fmt2::printRangedDistribution(*r->rdistribution()) << "\n";
         result << indent() << "scan.setWavelengthResolution(distribution, "
-               << Py::Fmt::printDouble(r->delta()) << ")\n";
+               << Py::Fmt::printDouble(r->stdDev()) << ")\n";
     }
     return result.str();
 }
diff --git a/Sim/Scan/ScanResolution.h b/Sim/Scan/ScanResolution.h
index a707bf5aa62f7f4806a9036e07e209f32cd31bf8..237cdacaf6188b2b29d678fceee3db83247fd41a 100644
--- a/Sim/Scan/ScanResolution.h
+++ b/Sim/Scan/ScanResolution.h
@@ -43,12 +43,6 @@ public:
         return m_stddev;
     }
 
-    //... For export:
-    double delta() const
-    {
-        return m_stddev;
-    }
-
 protected:
     std::unique_ptr<IRangedDistribution> m_distr; //!< basic distribution function
     double m_stddev;                              //!< deltas for computing resolutions