diff --git a/src/Mod/CAM/Path/Op/Adaptive.py b/src/Mod/CAM/Path/Op/Adaptive.py
index 36e561d32d..82d899e2d9 100644
--- a/src/Mod/CAM/Path/Op/Adaptive.py
+++ b/src/Mod/CAM/Path/Op/Adaptive.py
@@ -600,6 +600,7 @@ def Execute(op, obj):
             "stockGeometry": stockPath2d,
             "stepover": float(obj.StepOver),
             "effectiveHelixDiameter": float(helixDiameter),
+            "helixMinDiameter": float(helixMinDiameter),
             "operationType": obj.OperationType,
             "side": obj.Side,
             "forceInsideOut": obj.ForceInsideOut,