diff --git a/scanner/scanner.go b/scanner/scanner.go
index 4cf70f2..4cd07e9 100644
--- a/scanner/scanner.go
+++ b/scanner/scanner.go
@@ -155,27 +155,16 @@ func (s *Scanner) updateIndentLevel() {
 }
 
 func (s *Scanner) updateIndentState(ctx *Context) {
-	if s.lastDelimColumn > 0 {
-		if s.lastDelimColumn < s.column {
-			s.indentState = IndentStateUp
-		} else {
-			// If lastDelimColumn and s.column are the same,
-			// treat as Down state since it is the same column as delimiter.
-			s.indentState = IndentStateDown
-		}
-	} else {
-		s.indentState = s.indentStateFromIndentNumDifference()
+	if s.lastDelimColumn == 0 {
+		return
 	}
-}
 
-func (s *Scanner) indentStateFromIndentNumDifference() IndentState {
-	switch {
-	case s.prevLineIndentNum < s.indentNum:
-		return IndentStateUp
-	case s.prevLineIndentNum == s.indentNum:
-		return IndentStateEqual
-	default:
-		return IndentStateDown
+	if s.lastDelimColumn < s.column {
+		s.indentState = IndentStateUp
+	} else {
+		// If lastDelimColumn and s.column are the same,
+		// treat as Down state since it is the same column as delimiter.
+		s.indentState = IndentStateDown
 	}
 }
 
diff --git a/yaml_test_suite_test.go b/yaml_test_suite_test.go
index dd39e22..19d9400 100644
--- a/yaml_test_suite_test.go
+++ b/yaml_test_suite_test.go
@@ -38,7 +38,6 @@ var failureTestNames = []string{
 	"legal-tab-after-indentation",                    // pass yamlv3.
 	"mapping-key-and-flow-sequence-item-anchors",     // no json.
 	"multiline-plain-value-with-tabs-on-empty-lines", // pass yamlv3.
-	"multiline-scalar-at-top-level",                  // pass yamlv3.
 	"multiline-scalar-at-top-level-1-3",              // pass yamlv3.
 	"nested-implicit-complex-keys",                   // no json.
 	"plain-dashes-in-flow-sequence",