diff --git a/src/KTrie.h b/src/KTrie.h
index a2e5f705..d535d34e 100644
--- a/src/KTrie.h
+++ b/src/KTrie.h
@@ -64,9 +64,9 @@ namespace kiwi
 		uint32_t typoFormId = 0;
 		uint32_t spaceErrors = 0;
 
-		KGraphNode(uint16_t _startPos = 0, uint16_t _endPos = 0, const Form* _form = nullptr, float _typoCost = 0) 
+		KGraphNode(uint32_t _startPos = 0, uint32_t _endPos = 0, const Form* _form = nullptr, float _typoCost = 0) 
 			: form(_form), startPos(_startPos), endPos(_endPos), typoCost(_typoCost) {}
-		KGraphNode(uint16_t _startPos, uint16_t _endPos, U16StringView _uform, float _typoCost = 0) 
+		KGraphNode(uint32_t _startPos, uint32_t _endPos, U16StringView _uform, float _typoCost = 0) 
 			: uform(_uform), startPos(_startPos), endPos(_endPos), typoCost(_typoCost) {}
 
 		KGraphNode* getPrev() { return prev ? this - prev : nullptr; }
diff --git a/src/KiwiBuilder.cpp b/src/KiwiBuilder.cpp
index b9aca146..b9f69c29 100644
--- a/src/KiwiBuilder.cpp
+++ b/src/KiwiBuilder.cpp
@@ -986,23 +986,32 @@ void KiwiBuilder::saveMorphBin(std::ostream& os) const
 ModelType KiwiBuilder::getModelType(const KiwiBuilder::StreamProvider& provider, bool largest)
 {
 	// Check for different model files by trying to create streams
-	try {
-		if (auto stream = provider("cong.mdl")) {
+	try 
+	{
+		if (auto stream = provider("cong.mdl")) 
+		{
 			return largest ? ModelType::congGlobal : ModelType::cong;
 		}
-	} catch (...) {}
+	}
+	catch (...) {}
 	
-	try {
-		if (auto stream = provider("skipbigram.mdl")) {
+	try 
+	{
+		if (auto stream = provider("skipbigram.mdl")) 
+		{
 			return largest ? ModelType::sbg : ModelType::knlm;
 		}
-	} catch (...) {}
+	} 
+	catch (...) {}
 	
-	try {
-		if (auto stream = provider("sj.knlm")) {
+	try 
+	{
+		if (auto stream = provider("sj.knlm")) 
+		{
 			return ModelType::knlm;
 		}
-	} catch (...) {}
+	} 
+	catch (...) {}
 	
 	return ModelType::none;
 }
@@ -2431,6 +2440,11 @@ namespace kiwi
 
 Kiwi KiwiBuilder::build(const TypoTransformer& typos, float typoCostThreshold) const
 {
+	if (!ready())
+	{
+		return Kiwi{};
+	}
+
 	Kiwi ret{ archType, langMdl, !typos.empty(), typos.isContinualTypoEnabled(), typos.isLengtheningTypoEnabled() };
 	ret.enabledDialects = enabledDialects;
 	ret.nounChrMdl = nounChrMdl;
diff --git a/test/test_cpp.cpp b/test/test_cpp.cpp
index d25881cd..c5c91569 100644
--- a/test/test_cpp.cpp
+++ b/test/test_cpp.cpp
@@ -2183,6 +2183,24 @@ TEST(KiwiCpp, IssueP172_LengthError)
 	EXPECT_GT(res.size(), 0);
 }
 
+TEST(KiwiCpp, LongChunkOver65536)
+{
+	// 공백 없이 라틴 문자와 기호가 이어진 덩어리가 65536자를 넘으면 KGraphNode의 위치가 16비트로 잘려 크래시가 났다.
+	Kiwi& kiwi = reuseKiwiInstance();
+	for (auto p : { std::make_pair(127, 512), std::make_pair(100, 700) })
+	{
+		std::u16string text;
+		for (int i = 0; i < p.second; ++i)
+		{
+			text += std::u16string(p.first, u'A');
+			text += u"#";
+		}
+		auto res = kiwi.analyze(text, Match::allWithNormalizing).first;
+		ASSERT_GT(res.size(), 0);
+		EXPECT_EQ(res.back().position + res.back().length, text.size());
+	}
+}
+
 TEST(KiwiCpp, IssueP189)
 {
 	Kiwi& kiwi = reuseKiwiInstance();