diff --git a/gaboshlib.include b/gaboshlib.include
index 7718d5f..db32715 100644
--- a/gaboshlib.include
+++ b/gaboshlib.include
@@ -51,4 +51,5 @@ trap "redirect;" DEBUG
 PROMPT_COMMAND='undirect;'
 
 # LANG for "." as decimal separator (and not e.g. in German ",")
+export LC_NUMERIC=C
 export LANG=en_US.UTF-8