diff --git a/include/mgba/script/types.h b/include/mgba/script/types.h
index af6d8f736..87953723a 100644
--- a/include/mgba/script/types.h
+++ b/include/mgba/script/types.h
@@ -686,6 +686,7 @@ struct mScriptValue* mScriptValueUnwrap(struct mScriptValue* val);
 const struct mScriptValue* mScriptValueUnwrapConst(const struct mScriptValue* val);
 
 struct mScriptValue* mScriptStringCreateFromUTF8(const char* string);
+struct mScriptValue* mScriptStringCreateFromASCII(const char* string);
 struct mScriptValue* mScriptValueCreateFromUInt(uint32_t value);
 struct mScriptValue* mScriptValueCreateFromSInt(int32_t value);
 
diff --git a/src/script/types.c b/src/script/types.c
index 835128c5f..1152e28ef 100644
--- a/src/script/types.c
+++ b/src/script/types.c
@@ -7,6 +7,7 @@
 
 #include <mgba/script/context.h>
 #include <mgba-util/hash.h>
+#include <mgba-util/string.h>
 #include <mgba-util/table.h>
 
 static void _allocList(struct mScriptValue*);
@@ -738,9 +739,20 @@ struct mScriptValue* mScriptStringCreateFromUTF8(const char* string) {
 	struct mScriptValue* val = mScriptValueAlloc(mSCRIPT_TYPE_MS_STR);
 	struct mScriptString* internal = val->value.opaque;
 	internal->size = strlen(string);
+	internal->length = utf8strlen(string);
 	internal->buffer = strdup(string);
 	return val;
 }
+
+struct mScriptValue* mScriptStringCreateFromASCII(const char* string) {
+	struct mScriptValue* val = mScriptValueAlloc(mSCRIPT_TYPE_MS_STR);
+	struct mScriptString* internal = val->value.opaque;
+	internal->size = strlen(string);
+	internal->length = strlen(string);
+	internal->buffer = latin1ToUtf8(string, internal->size + 1);
+	return val;
+}
+
 struct mScriptValue* mScriptValueCreateFromSInt(int32_t value) {
 	struct mScriptValue* val = mScriptValueAlloc(mSCRIPT_TYPE_MS_S32);
 	val->value.s32 = value;