diff --git a/Makefile b/Makefile
index 7b4707afe..4b004196d 100644
--- a/Makefile
+++ b/Makefile
@@ -97,6 +97,14 @@ else ifeq ($(CONFIG),emcc)
 CXX = emcc
 CXXFLAGS += -std=c++11 -Os -Wno-warn-absolute-paths
 CXXFLAGS := $(filter-out -ggdb,$(CXXFLAGS))
+EMCCFLAGS := -s ALLOW_MEMORY_GROWTH=1
+EMCCFLAGS += -s DISABLE_EXCEPTION_CATCHING=0
+# EMCCFLAGS += -s ASSERTIONS=2
+# EMCCFLAGS += -s SAFE_HEAP=1
+# EMCCFLAGS += -s RELOOP=0
+# EMCCFLAGS += -g4
+CXXFLAGS += $(EMCCFLAGS)
+LDFLAGS += $(EMCCFLAGS)
 EXE = .html
 
 else ifeq ($(CONFIG),mxe)