diff --git a/Core/Tools/PyGenVisitor.cpp b/Core/Tools/PyGenVisitor.cpp
index 026329cf6d58015449cfcff872b316d20301d3d9..2575a9e5ce9d2209ae422bf874864b4696cb3d22 100644
--- a/Core/Tools/PyGenVisitor.cpp
+++ b/Core/Tools/PyGenVisitor.cpp
@@ -433,7 +433,7 @@ std::string PyGenVisitor::defineFormFactors() const
 
         else if (const FormFactorCone6 *cone6 = dynamic_cast<const FormFactorCone6 *>(p_ff)) {
             result << " = FormFactorCone6("
-                   << PyGenTools::printNm(cone6->getRadius()) << ", "
+                   << PyGenTools::printNm(cone6->getBaseEdge()) << ", "
                    << PyGenTools::printNm(cone6->getHeight()) << ", "
                    << PyGenTools::printDegrees(cone6->getAlpha()) << ")\n";
         }