diff --git a/Makefile b/Makefile
index f73e8bdd73..4d65fa4ec2 100644
--- a/Makefile
+++ b/Makefile
@@ -8,7 +8,7 @@ ES_HOST =
 .PHONY: all clean html latexpdf epub htmlhelp website website-dirs
 
 # Languages that can be built.
-LANGS = en es fr ja pt ru ro sr zh
+LANGS = en es fr ja pt ru zh
 
 # pdflatex does not like ja or ru for some reason.
 PDF_LANGS = en es fr pt ro