diff --git a/share/js_src/compile.sh b/share/js_src/compile.sh
index 027d249..275776a 100755
--- a/share/js_src/compile.sh
+++ b/share/js_src/compile.sh
@@ -10,7 +10,14 @@ BASEDIR=$(dirname $0)
 OUTPUT="$BASEDIR/../pdf2htmlEX.js"
 
 (echo 'Building pdf2htmlEX.js with closure-compiler...' && \
-    java -jar "$BASEDIR/../../3rdparty/closure-compiler/compiler.jar" --compilation_level ADVANCED_OPTIMIZATIONS --process_jquery_primitives --externs "$BASEDIR/../jquery.js" --js "$BASEDIR/header.js" --js "$BASEDIR/css_class_names.js" --js "$BASEDIR/viewer.js" > "$OUTPUT" 2>/dev/null && \
+    java -jar "$BASEDIR/../../3rdparty/closure-compiler/compiler.jar" \
+         --compilation_level ADVANCED_OPTIMIZATIONS \
+         --process_jquery_primitives \
+         --externs "$BASEDIR/../jquery.js" \
+         --js "$BASEDIR/header.js" \
+         --js "$BASEDIR/css_class_names.js" \
+         --js "$BASEDIR/viewer.js" \
+         --js_output_file "$OUTPUT" 2>/dev/null && \
     echo 'Done.') || \
 (echo 'Failed. Read `3rdparty/closure-compiler/README` for more detail.' && \
 echo 'Fall back to naive concatenation' && \