diff --git a/ptbposter/ptbposter-tcb.sty b/ptbposter/ptbposter-tcb.sty
index eb42a84006bb913a55ae239bdf1e06df9ca29af0..ec081b8adf3b2d7bb4e27c42ba5d6805cb706fec 100644
--- a/ptbposter/ptbposter-tcb.sty
+++ b/ptbposter/ptbposter-tcb.sty
@@ -43,8 +43,8 @@
     %opacityback=0.75,% ????
     colframe=PTBcolor,
     coltitle=white,
-    fonttitle=\sffamily\bfseries,
-    title style=PTBcolor,
+    fonttitle=\sffamily\bfseries\centering,
+    title style={PTBcolor},
     valign=top% center
   }
 }%