diff --git a/src/Mod/PartDesign/Gui/TaskPadParameters.cpp b/src/Mod/PartDesign/Gui/TaskPadParameters.cpp
index cf93b10da..56d962655 100644
--- a/src/Mod/PartDesign/Gui/TaskPadParameters.cpp
+++ b/src/Mod/PartDesign/Gui/TaskPadParameters.cpp
@@ -293,7 +293,7 @@ void TaskPadParameters::onModeChanged(int index)
         case 0:
             pcPad->Type.setValue("Length");
             // Avoid error message
-            if (ui->lengthEdit->value() < Precision::Confusion())
+            if (ui->lengthEdit->value() < Base::Quantity(Precision::Confusion(), Base::Unit::Length))
                 ui->lengthEdit->setValue(5.0);
             break;
         case 1: pcPad->Type.setValue("UpToLast"); break;