diff --git a/Makefile b/Makefile
index 0c1ed90..7d27041 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,7 @@
 CPPFLAGS += -I $(GPHOTO2PREFIX)/include
 
 libapi.mjs: api.cpp
-	libtool --verbose --mode=link --tag=CXX $(CC) -std=c++17 $+ --bind -s ASYNCIFY -fexceptions -g -s INITIAL_MEMORY=280231936 -s ALLOW_MEMORY_GROWTH -s ASYNCIFY_STACK_SIZE=1048576 -s DYNAMIC_EXECUTION=0 -o $@ \
+	libtool --verbose --mode=link --tag=CXX $(CC) -std=c++17 $+ --bind -s ASYNCIFY -fexceptions -g -O2 -s ALLOW_MEMORY_GROWTH -s DYNAMIC_EXECUTION=0 -o $@ \
 	  $(GPHOTO2PREFIX)/lib/libltdl.la \
 	  $(GPHOTO2PREFIX)/lib/libgphoto2.la \
 	  -dlpreopen $(GPHOTO2PREFIX)/lib/libgphoto2/2.5.27.1/ptp2.la \