diff --git a/Makefile.plugins.mk b/Makefile.plugins.mk
index f5395808..1cb0d1d8 100644
--- a/Makefile.plugins.mk
+++ b/Makefile.plugins.mk
@@ -375,6 +375,8 @@ endif
 ifeq ($(WASM),true)
 MAPI_EXT    = -mapi.js
 MAPI_SHARED = \
+	-sALLOW_MEMORY_GROWTH \
+	-sALLOW_TABLE_GROWTH \
 	-sEXPORT_NAME="$(MAPI_MODULE_NAME)" \
 	-sEXPORTED_RUNTIME_METHODS=['addFunction','lengthBytesUTF8','stringToUTF8','UTF8ToString'] \
 	-sMAIN_MODULE=2 \
@@ -450,7 +452,7 @@ SYMBOLS_LADSPA = -sEXPORTED_FUNCTIONS="['ladspa_descriptor']"
 SYMBOLS_LV2    = -sEXPORTED_FUNCTIONS="['lv2_descriptor','lv2_generate_ttl','lv2ui_descriptor']"
 SYMBOLS_LV2DSP = -sEXPORTED_FUNCTIONS="['lv2_descriptor','lv2_generate_ttl']"
 SYMBOLS_LV2UI  = -sEXPORTED_FUNCTIONS="['lv2ui_descriptor']"
-SYMBOLS_MAPI   = -sEXPORTED_FUNCTIONS="['_mapi_create','_mapi_process','_mapi_set_parameter','_mapi_set_state','_mapi_destroy']"
+SYMBOLS_MAPI   = -sEXPORTED_FUNCTIONS="['_malloc','_free','_mapi_create','_mapi_process','_mapi_set_parameter','_mapi_set_state','_mapi_destroy']"
 SYMBOLS_VST2   = -sEXPORTED_FUNCTIONS="['VSTPluginMain']"
 SYMBOLS_VST3   = -sEXPORTED_FUNCTIONS="['GetPluginFactory','ModuleEntry','ModuleExit']"
 else ifeq ($(WINDOWS),true)