diff --git a/emulatorjs/build-emulatorjs.sh b/emulatorjs/build-emulatorjs.sh
index a2e7bfd3c7e3..376d0982053e 100755
--- a/emulatorjs/build-emulatorjs.sh
+++ b/emulatorjs/build-emulatorjs.sh
@@ -69,7 +69,7 @@ needsThreads=("ppsspp" "azahar")
 largeThreads=("ppsspp" "azahar")
 noCHD=("mame2003" "mame2003_plus" "pcsx_rearmed" "genesis_plus_gx" "genesis_plus_gx_wide" "azahar")
 no7Zip=("bsnes")
-needsAsync=("mupen64plus_next" "dosbox_pure" "ppsspp" "azahar" "bsnes")
+needsAsync=("mupen64plus_next" "dosbox_pure" "ppsspp" "azahar" "bsnes" "bluemsx")
 
 for f in $(ls -v *_emscripten.bc); do
   name=`echo "$f" | sed "s/\(_libretro_emscripten\|\).bc$//"`