diff --git a/kalibrierschein/siunitx-PTB.sty b/kalibrierschein/siunitx-PTB.sty
index a8de3b6f376163766b6a8e320830cc73fe4db2db..64a894f6a92ab3a978e3d8b5ed4088aba33ae968 100644
--- a/kalibrierschein/siunitx-PTB.sty
+++ b/kalibrierschein/siunitx-PTB.sty
@@ -84,5 +84,9 @@
   }
 }
 
+\addto\extrasgerman{\sisetup{locale=DE}} 
+\addto\extrasngerman{\sisetup{locale=DE}} 
+\addto\extrasenglish{\sisetup{locale=US}}
+
 \endinput