diff --git a/coverletter.tex b/coverletter.tex
index b41f2ec54..3c69724cd 100644
--- a/coverletter.tex
+++ b/coverletter.tex
@@ -17,7 +17,7 @@
 \date{September 31, 2016} % stand-in
 
 \geometry{headheight = 0.6in}
-\fancypagestyle{empty}{\fancyhf{}\fancyhead[L]{\includegraphics[height=1in, keepaspectratio=true]{logo-curves.png}}}
+\fancypagestyle{empty}{\fancyhf{}\fancyhead[L]{\includegraphics[height=1in, keepaspectratio=true]{logo-curves.pdf}}}
 
 \begin{document}
 
diff --git a/logo-curves.png b/logo-curves.png
deleted file mode 100644
index 47e5c46ef..000000000
Binary files a/logo-curves.png and /dev/null differ