diff --git a/iguana/exchanges/m_js b/iguana/exchanges/m_js
index 00b5d32e5..a4ee63f0b 100755
--- a/iguana/exchanges/m_js
+++ b/iguana/exchanges/m_js
@@ -1,3 +1,4 @@
 cd ..
+echo building...
 ~/emsdk/emscripten/1.37.21/emcc -DFROM_JS -O2 -I../includes -I../crypto777 -s ALLOW_MEMORY_GROWTH=1 -s PTHREAD_POOL_SIZE=40 -s USE_PTHREADS=2 -o /var/www/html/index.html exchanges/mm.c ../crypto777/*.c ../crypto777/jpeg/*.c ../crypto777/jpeg/unix/*.c mini-gmp.c secp256k1/src/secp256k1.c -lm ../OSlibs/js/libnanomsg.so