diff --git a/FHEM/59_PROPLANTA.pm b/FHEM/59_PROPLANTA.pm
index a2f456ed6..f954118db 100644
--- a/FHEM/59_PROPLANTA.pm
+++ b/FHEM/59_PROPLANTA.pm
@@ -47,14 +47,14 @@ my $curReadingType = 0;
       ,["VERDUNST", "evapor", 4]
       ,["TAUBILDUNG", "dew", 4]
       ,["BF", "frost", 4]
-      ,["T_0", "0000_c", 2]
-      ,["T_3", "0300_c", 2]
-      ,["T_6", "0600_c", 2]
-      ,["T_9", "0900_c", 2]
-      ,["T_12", "1200_c", 2]
-      ,["T_15", "1500_c", 2]
-      ,["T_18", "1800_c", 2]
-      ,["T_21", "2100_c", 2]
+      ,["T_0", "t00_c", 2]
+      ,["T_3", "t03_c", 2]
+      ,["T_6", "t06_c", 2]
+      ,["T_9", "t09_c", 2]
+      ,["T_12", "t12_c", 2]
+      ,["T_15", "t15_c", 2]
+      ,["T_18", "t18_c", 2]
+      ,["T_21", "t21_c", 2]
   );
 
 # here HTML::text/start/end are overridden