diff --git a/flow360/component/simulation/outputs/output_fields.py b/flow360/component/simulation/outputs/output_fields.py
index f01178317..4818111b2 100644
--- a/flow360/component/simulation/outputs/output_fields.py
+++ b/flow360/component/simulation/outputs/output_fields.py
@@ -185,6 +185,7 @@
     "residualTurbulence",
     "solutionNavierStokes",
     "T",
+    "Mach",
     "linearResidualNavierStokes",
     "linearResidualTurbulence",
     "linearResidualTransition",