diff --git a/Makefile b/Makefile
index 72906b8..d58486f 100644
--- a/Makefile
+++ b/Makefile
@@ -31,13 +31,14 @@ FBS = $(subst tests/,target/fb/,${YAMLS:.yml=.fb})
 HTMLS = $(subst fb/,html/,${FBS:.fb=.html})
 XSLS = $(subst xsl/,target/xsl/,$(wildcard xsl/*.xsl))
 JUDGES = judges
-DIRS = target target/html target/fb target/xsl target/css
+DIRS = target target/html target/fb target/xsl target/css target/js
 CSS = target/css/main.css
+JS = target/js/main.js
 SAXON = target/saxon.jar
 
 export
 
-all: $(CSS) $(XSLS) $(HTMLS) entry rmi verify
+all: $(JS) $(CSS) $(XSLS) $(HTMLS) entry rmi verify
 
 target/xsl/%.xsl: xsl/%.xsl | target/xsl
 	cp $< $@
@@ -59,6 +60,9 @@ target/fb/%.fb: tests/%.yml Makefile | target/fb
 $(CSS): sass/*.scss | target/css
 	sass --no-source-map --style=compressed --no-quiet --stop-on-error $< $@
 
+$(JS): js/*.js | target/js
+	uglifyjs $< > $@
+
 clean:
 	rm -rf target
 
diff --git a/entry.sh b/entry.sh
index e4a530b..b178abc 100755
--- a/entry.sh
+++ b/entry.sh
@@ -83,7 +83,7 @@ done <<< "${INPUT_OPTIONS}"
 
 # Build a summary HTML.
 css=$(cat "${SELF}/target/css/main.css")
-js=$(uglifyjs "${SELF}/js/*.js")
+js=$(cat "${SELF}/target/js/main.js")
 html=${INPUT_OUTPUT}/${name}.html
 java -jar "${SELF}/target/saxon.jar" \
     "-s:${INPUT_OUTPUT}/${name}.rich.xml" \