diff --git a/Makefile.plugins.mk b/Makefile.plugins.mk
index 4656ad24..8ee9b7ab 100644
--- a/Makefile.plugins.mk
+++ b/Makefile.plugins.mk
@@ -64,6 +64,7 @@ ifeq ($(WASM),true)
 
 JACK_FLAGS += -sUSE_SDL=2
 JACK_LIBS  += -sUSE_SDL=2
+JACK_LIBS  += -sMAIN_MODULE
 
 ifneq ($(FILE_BROWSER_DISABLED),true)
 JACK_LIBS  += -sEXPORTED_RUNTIME_METHODS=FS,cwrap