diff --git a/apps/toolbox.en.i18n b/apps/toolbox.en.i18n
index 9d0eef2b1..becb8628e 100644
--- a/apps/toolbox.en.i18n
+++ b/apps/toolbox.en.i18n
@@ -31,7 +31,7 @@ UnitMassGram = "Gram"
 UnitMassGramMilli = "Milligram"
 UnitMassGramMicro = "Microgram"
 UnitMassGramNano = "Nanogram"
-UnitMassTonne = "Tonne"
+UnitMassTonne = "Metric Ton"
 UnitMassOunce = "Ounce"
 UnitMassPound = "Pound"
 UnitMassShortTon = "Short Ton"