diff --git a/CMakeLists.txt b/CMakeLists.txt
index 39099b1..ed9a5dd 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -183,6 +183,7 @@ add_custom_target(pdf2htmlEX_resources ALL DEPENDS
 add_custom_command(OUTPUT ${CMAKE_SOURCE_DIR}/share/pdf2htmlEX.min.js
     COMMAND ${CMAKE_SOURCE_DIR}/share/build_js.sh
     DEPENDS
+        ${CMAKE_SOURCE_DIR}/share/build_js.sh
         ${CMAKE_SOURCE_DIR}/share/pdf2htmlEX.js
     )
 
@@ -191,6 +192,7 @@ add_custom_command(OUTPUT
         ${CMAKE_SOURCE_DIR}/share/fancy.min.css
     COMMAND ${CMAKE_SOURCE_DIR}/share/build_css.sh
     DEPENDS
+        ${CMAKE_SOURCE_DIR}/share/build_css.sh
         ${CMAKE_SOURCE_DIR}/share/base.css
         ${CMAKE_SOURCE_DIR}/share/fancy.css
     )
diff --git a/share/build_js.sh b/share/build_js.sh
index c03eba3..a6e7d61 100755
--- a/share/build_js.sh
+++ b/share/build_js.sh
@@ -15,7 +15,7 @@ OUTPUT="$BASEDIR/$OUTPUT_FN"
 
 (echo "Building $OUTPUT_FN with closure-compiler..." && \
     java -jar "$CLOSURE_COMPILER_JAR" \
-         --compilation_level ADVANCED_OPTIMIZATIONS \
+         --compilation_level SIMPLE_OPTIMIZATIONS \
          --warning_level VERBOSE \
          --output_wrapper "(function(){%output%})();" \
          --js "$INPUT" \