diff --git a/CoolPropBibTeXLibrary.bib b/CoolPropBibTeXLibrary.bib
index bbf7a6cf..a83109f1 100644
--- a/CoolPropBibTeXLibrary.bib
+++ b/CoolPropBibTeXLibrary.bib
@@ -418,7 +418,7 @@
 @PHDTHESIS{Gernert-Thesis-2013,
   author = {Georg Johannes Gernert},
   title = {{A New Helmholtz Energy Model for Humid Gases and CCS Mixtures}},
-  school = {Ruhr-Universit{\:a}t Bochum},
+  school = {Ruhr-Universit{\"a}t Bochum},
   year = {2013},
   owner = {Belli},
   timestamp = {2014.09.27}