diff --git a/unittests/test.csv b/unittests/test.csv
index b005ccf120eb808d017b97e3b92777511cd0a126..a29679afce78089f3cdd4e5e388262456668cd90 100644
--- a/unittests/test.csv
+++ b/unittests/test.csv
@@ -1,3 +1,3 @@
-temperature [�C] ,depth 
+temperature [°C] ,depth 
 234.4,3.0
 344.6,5.1