diff --git a/Makefile.emscripten b/Makefile.emscripten
index 5b0ceda..f7be334 100644
--- a/Makefile.emscripten
+++ b/Makefile.emscripten
@@ -26,7 +26,7 @@ CXX = em++
 CXXFLAGS = $(DEFS) $(INCLUDES) $(EMFLAGS) -MMD
 
 LFLAGS := $(EMFLAGS)
-LFLAGS += -s EXPORTED_FUNCTIONS="['_main','_ags_setAntialiasedStringMode','_sjis2unicode']"
+LFLAGS += -s EXPORTED_FUNCTIONS="['_main','_ags_setAntialiasedStringMode']"
 LFLAGS += -s EXTRA_EXPORTED_RUNTIME_METHODS="['getValue','getMemory','addRunDependency','removeRunDependency']"
 
 all: out/system3.js out/system3.asm.js
diff --git a/src/sys/ags_text.cpp b/src/sys/ags_text.cpp
index 54432db..33204ac 100644
--- a/src/sys/ags_text.cpp
+++ b/src/sys/ags_text.cpp
@@ -540,10 +540,6 @@ void ags_setAntialiasedStringMode(int on) {
 }
 
 #ifdef __EMSCRIPTEN__
-int sjis2unicode(int byte1, int byte2) {
-	return s2u[byte1 - 0x80][byte2 - 0x40];
-}
-
 char* sjis2utf(char* str) {
 	unsigned char* src = (unsigned char*)str;
 	unsigned char* dst = (unsigned char*)malloc(strlen(str) * 3 + 1);