diff --git a/beamerthemelumc.sty b/beamerthemelumc.sty
index 5ae6cf3fe8ed0fb0a82113c0a6aae3e6e7074f1a..c89293fb963cd0abc5ca7c0fcf62010c3fade48b 100644
--- a/beamerthemelumc.sty
+++ b/beamerthemelumc.sty
@@ -102,6 +102,10 @@
   numberstyle = \tiny
 }
 
+% Change the font of the captions of listings.
+\usepackage{caption}
+\captionsetup[lstlisting]{font={footnotesize}}
+
 % Define an empty language to use only for typesetting.
 \lstdefinelanguage{none}{}