diff --git a/zaaReloaded2/Defaults/parameters.txt b/zaaReloaded2/Defaults/parameters.txt
index a2cc569..f20ee6b 100755
--- a/zaaReloaded2/Defaults/parameters.txt
+++ b/zaaReloaded2/Defaults/parameters.txt
@@ -103,7 +103,7 @@ Unreife Granulozyten"              Gran                 E
 "Urobilinogen (U)"                 Urobilinogen         U
 "Niedermol. Heparin (Anti-Xa)"     Anti-Xa              Z
 "Thromboplastinzeit n. Quick"      Quick                Z
-PTT                                aPTT                 Z
+PTT                                PTT                  Z
 "Ratio int. norm."                 INR                  Z
 "Komplementfaktor C3c"             C3c                  S                     X
 "Komplementfaktor C4"              C4                   S                     X