diff --git a/Makefile.emscripten b/Makefile.emscripten
index f747cfae94..5e5a2951d0 100644
--- a/Makefile.emscripten
+++ b/Makefile.emscripten
@@ -3,7 +3,7 @@ TARGET = retroarch.js
 OS = Emscripten
 OBJ :=
 DEFINES := -DRARCH_INTERNAL -DHAVE_OVERLAY -DHAVE_MAIN
-DEFINES += -DHAVE_OPENGL -DHAVE_OPENGLES -DHAVE_OPENGLES2 -DHAVE_EGL -DHAVE_OVERLAY -DHAVE_GLSL -DHAVE_SDL2 -DHAVE_FILTERS_BUILTIN
+DEFINES += -DHAVE_OPENGL -DHAVE_OPENGLES -DHAVE_OPENGLES2 -DHAVE_EGL -DHAVE_OVERLAY -DHAVE_GLSL -DHAVE_FILTERS_BUILTIN
 
 HAVE_EGL    = 1
 HAVE_OPENGL = 1
@@ -26,7 +26,11 @@ ifneq ($(NATIVE_ZLIB),)
    WANT_ZLIB = 0
 endif
 
-#if you compil with SDL2 flag add this Emscripten flag "-s USE_SDL=2" to LDFLAGS:
+ifeq ($(HAVE_SDL2), 1)
+DEFINES += -DHAVE_SDL2
+endif
+
+#if you compile with SDL2 flag add this Emscripten flag "-s USE_SDL=2" to LDFLAGS:
 
 LIBS    :=
 LDFLAGS := -L. --no-heap-copy -s USE_ZLIB=1 -s TOTAL_MEMORY=$(MEMORY) -s OUTLINING_LIMIT=50000 \