diff --git a/apps/toolbox.nl.i18n b/apps/toolbox.nl.i18n
index 65ce2c17e..457824f76 100644
--- a/apps/toolbox.nl.i18n
+++ b/apps/toolbox.nl.i18n
@@ -107,7 +107,7 @@ BasedLogarithm = "Logaritme met grondtal a"
 Calculation = "Calculatie"
 ComplexNumber = "Complexe getallen"
 Combinatorics = "Combinatoriek"
-Arithmetic = "rekenkunde"
+Arithmetic = "Rekenkunde"
 Matrices = "Matrix"
 NewMatrix = "Nieuwe matrix"
 Identity = "Eenheidsmatrix van formaat n"