diff --git a/Makefile b/Makefile
index a1d62a9..c531601 100644
--- a/Makefile
+++ b/Makefile
@@ -275,8 +275,6 @@ else ifeq ($(platform), ctr)
 else ifeq ($(platform), emscripten)
 	TARGET := $(TARGET_NAME)_libretro_$(platform).bc
 	AR = emar
-	fpic := -fPIC
-	SHARED := -shared -Wl,--version-script=$(CORE_DIR)/link.T -Wl,--no-undefined
 	STATIC_LINKING=1
 
 # Playstation PS2
@@ -594,9 +592,13 @@ endif
 
 ifeq ($(DEBUG), 1)
 	CFLAGS += -O0 -g
+else
+ifeq ($(platform), emscripten)
+	CFLAGS += -O3 -DNDEBUG
 else
 	CFLAGS += -O2 -DNDEBUG
 endif
+endif
 
 ifneq (,$(findstring msvc,$(platform)))
 ifeq ($(DEBUG), 1)