diff --git a/beamerthememum.sty b/beamerthememum.sty
index 29f232a..9ef244b 100644
--- a/beamerthememum.sty
+++ b/beamerthememum.sty
@@ -14,7 +14,7 @@
 \setbeamerfont{institute in footline}{size={\tiny}}
 \setbeamerfont{framenumber in footline}{size={\tiny}}
 \setbeamerfont{title}{size={\huge},family={\bfseries}}
-\setbeamerfont{subtitle}{size={\LARGE}}
+\setbeamerfont{subtitle}{size={\LARGE}, family={\mdseries}}
 \setbeamerfont{author}{size={\large}}
 \mode<all>