diff --git a/internal/format/format_test.go b/internal/format/format_test.go
index 1bf7945076..f38ef3f89e 100644
--- a/internal/format/format_test.go
+++ b/internal/format/format_test.go
@@ -58,3 +58,32 @@ func TestFormatNoTrailingNewline(t *testing.T) {
 		})
 	}
 }
+
+func TestTernaryWithTabs(t *testing.T) {
+	t.Parallel()
+
+	text := "const test = (a: string) => (\n\ta === '1' ? (\n\t\t10\n\t) : (\n\t\t12\n\t)\n)"
+	expected := "const test=(a: string) => (\n\ta==='1'? (\n\t\t10\n\t):(\n\t\t12\n\t)\n)"
+
+	ctx := format.WithFormatCodeSettings(t.Context(), &format.FormatCodeSettings{
+		EditorSettings: format.EditorSettings{
+			TabSize:                4,
+			IndentSize:             4,
+			BaseIndentSize:         0,
+			NewLineCharacter:       "\n",
+			ConvertTabsToSpaces:    false,
+			IndentStyle:            format.IndentStyleSmart,
+			TrimTrailingWhitespace: true,
+		},
+	}, "\n")
+
+	sourceFile := parser.ParseSourceFile(ast.SourceFileParseOptions{
+		FileName: "/test.ts",
+		Path:     "/test.ts",
+	}, text, core.ScriptKindTS)
+
+	edits := format.FormatDocument(ctx, sourceFile)
+	newText := applyBulkEdits(text, edits)
+
+	assert.Equal(t, expected, newText)
+}
diff --git a/internal/format/span.go b/internal/format/span.go
index f8d73d40b6..faafb32801 100644
--- a/internal/format/span.go
+++ b/internal/format/span.go
@@ -1055,9 +1055,12 @@ func (w *formatSpanWorker) consumeTokenAndAdvanceScanner(currentTokenInfo tokenI
 		indentNextTokenOrTrivia := true
 		if len(currentTokenInfo.leadingTrivia) > 0 {
 			commentIndentation := dynamicIndenation.getIndentationForComment(currentTokenInfo.token.Kind, tokenIndentation, container)
-			indentNextTokenOrTrivia = w.indentTriviaItems(currentTokenInfo.leadingTrivia, commentIndentation, indentNextTokenOrTrivia, func(item TextRangeWithKind) {
-				w.insertIndentation(item.Loc.Pos(), commentIndentation, false)
-			})
+			// Only indent comments if we have a valid indentation value
+			if commentIndentation != -1 {
+				indentNextTokenOrTrivia = w.indentTriviaItems(currentTokenInfo.leadingTrivia, commentIndentation, indentNextTokenOrTrivia, func(item TextRangeWithKind) {
+					w.insertIndentation(item.Loc.Pos(), commentIndentation, false)
+				})
+			}
 		}
 
 		// indent token only if is it is in target range and does not overlap with any error ranges
@@ -1091,6 +1094,10 @@ func (i *dynamicIndenter) getIndentationForComment(kind ast.Kind, tokenIndentati
 	//     // comment
 	// }
 	case ast.KindCloseBraceToken, ast.KindCloseBracketToken, ast.KindCloseParenToken:
+		// If indentation is -1 (Unknown), we should not add delta to it
+		if i.indentation == -1 {
+			return -1
+		}
 		return i.indentation + i.getDelta(container)
 	}
 	if tokenIndentation != -1 {
@@ -1113,6 +1120,10 @@ func (i *dynamicIndenter) getIndentationForComment(kind ast.Kind, tokenIndentati
 //
 //	> yValue;
 func (i *dynamicIndenter) getIndentationForToken(line int, kind ast.Kind, container *ast.Node, suppressDelta bool) int {
+	// If indentation is -1 (Unknown), we should not add delta to it
+	if i.indentation == -1 {
+		return -1
+	}
 	if !suppressDelta && i.shouldAddDelta(line, kind, container) {
 		return i.indentation + i.getDelta(container)
 	}