diff --git a/internal/encoder/encoder.go b/internal/encoder/encoder.go
index ad9ced5..3c6db04 100644
--- a/internal/encoder/encoder.go
+++ b/internal/encoder/encoder.go
@@ -468,7 +468,7 @@ func AppendMarshalJSONIndent(ctx *RuntimeContext, code *Opcode, b []byte, v inte
 	if err := Indent(
 		&indentBuf,
 		compactBuf.Bytes(),
-		string(ctx.Prefix)+strings.Repeat(string(ctx.IndentStr), ctx.BaseIndent+indent+1),
+		string(ctx.Prefix)+strings.Repeat(string(ctx.IndentStr), ctx.BaseIndent+indent),
 		string(ctx.IndentStr),
 	); err != nil {
 		return nil, &errors.MarshalerError{Type: reflect.TypeOf(v), Err: err}
diff --git a/internal/encoder/vm_escaped_indent/vm.go b/internal/encoder/vm_escaped_indent/vm.go
index 88799c8..02af6d3 100644
--- a/internal/encoder/vm_escaped_indent/vm.go
+++ b/internal/encoder/vm_escaped_indent/vm.go
@@ -2853,7 +2853,7 @@ func Run(ctx *encoder.RuntimeContext, b []byte, codeSet *encoder.OpcodeSet, opt
 			if p == 0 && code.Nilcheck {
 				b = appendNull(b)
 			} else {
-				bb, err := appendMarshalJSON(ctx, code, b, ptrToInterface(code, p), code.Indent, true)
+				bb, err := appendMarshalJSON(ctx, code, b, ptrToInterface(code, p), code.Indent+1, true)
 				if err != nil {
 					return nil, err
 				}
@@ -2899,7 +2899,7 @@ func Run(ctx *encoder.RuntimeContext, b []byte, codeSet *encoder.OpcodeSet, opt
 			if p == 0 && code.Nilcheck {
 				b = appendNull(b)
 			} else {
-				bb, err := appendMarshalJSON(ctx, code, b, ptrToInterface(code, p), code.Indent, true)
+				bb, err := appendMarshalJSON(ctx, code, b, ptrToInterface(code, p), code.Indent+1, true)
 				if err != nil {
 					return nil, err
 				}
@@ -2946,7 +2946,7 @@ func Run(ctx *encoder.RuntimeContext, b []byte, codeSet *encoder.OpcodeSet, opt
 				b = appendIndent(ctx, b, code.Indent+1)
 				b = append(b, code.EscapedKey...)
 				b = append(b, ' ')
-				bb, err := appendMarshalJSON(ctx, code, b, iface, code.Indent, true)
+				bb, err := appendMarshalJSON(ctx, code, b, iface, code.Indent+1, true)
 				if err != nil {
 					return nil, err
 				}
@@ -2988,7 +2988,7 @@ func Run(ctx *encoder.RuntimeContext, b []byte, codeSet *encoder.OpcodeSet, opt
 			if p == 0 {
 				b = appendNull(b)
 			} else {
-				bb, err := appendMarshalJSON(ctx, code, b, ptrToInterface(code, p), code.Indent, true)
+				bb, err := appendMarshalJSON(ctx, code, b, ptrToInterface(code, p), code.Indent+1, true)
 				if err != nil {
 					return nil, err
 				}
@@ -3030,7 +3030,7 @@ func Run(ctx *encoder.RuntimeContext, b []byte, codeSet *encoder.OpcodeSet, opt
 				b = appendIndent(ctx, b, code.Indent+1)
 				b = append(b, code.EscapedKey...)
 				b = append(b, ' ')
-				bb, err := appendMarshalJSON(ctx, code, b, ptrToInterface(code, p), code.Indent, true)
+				bb, err := appendMarshalJSON(ctx, code, b, ptrToInterface(code, p), code.Indent+1, true)
 				if err != nil {
 					return nil, err
 				}
@@ -3877,7 +3877,7 @@ func Run(ctx *encoder.RuntimeContext, b []byte, codeSet *encoder.OpcodeSet, opt
 			if p == 0 && code.Nilcheck {
 				b = appendNull(b)
 			} else {
-				bb, err := appendMarshalJSON(ctx, code, b, ptrToInterface(code, p), code.Indent, true)
+				bb, err := appendMarshalJSON(ctx, code, b, ptrToInterface(code, p), code.Indent+1, true)
 				if err != nil {
 					return nil, err
 				}
@@ -3898,7 +3898,7 @@ func Run(ctx *encoder.RuntimeContext, b []byte, codeSet *encoder.OpcodeSet, opt
 			b = appendIndent(ctx, b, code.Indent)
 			b = append(b, code.EscapedKey...)
 			b = append(b, ' ')
-			bb, err := appendMarshalJSON(ctx, code, b, ptrToInterface(code, p), code.Indent, true)
+			bb, err := appendMarshalJSON(ctx, code, b, ptrToInterface(code, p), code.Indent+1, true)
 			if err != nil {
 				return nil, err
 			}
@@ -3913,7 +3913,7 @@ func Run(ctx *encoder.RuntimeContext, b []byte, codeSet *encoder.OpcodeSet, opt
 			if p == 0 {
 				b = appendNull(b)
 			} else {
-				bb, err := appendMarshalJSON(ctx, code, b, ptrToInterface(code, p), code.Indent, true)
+				bb, err := appendMarshalJSON(ctx, code, b, ptrToInterface(code, p), code.Indent+1, true)
 				if err != nil {
 					return nil, err
 				}
@@ -3928,7 +3928,7 @@ func Run(ctx *encoder.RuntimeContext, b []byte, codeSet *encoder.OpcodeSet, opt
 				b = appendIndent(ctx, b, code.Indent)
 				b = append(b, code.EscapedKey...)
 				b = append(b, ' ')
-				bb, err := appendMarshalJSON(ctx, code, b, ptrToInterface(code, p), code.Indent, true)
+				bb, err := appendMarshalJSON(ctx, code, b, ptrToInterface(code, p), code.Indent+1, true)
 				if err != nil {
 					return nil, err
 				}
diff --git a/internal/encoder/vm_indent/vm.go b/internal/encoder/vm_indent/vm.go
index c2229d3..c3e54cc 100644
--- a/internal/encoder/vm_indent/vm.go
+++ b/internal/encoder/vm_indent/vm.go
@@ -2859,7 +2859,7 @@ func Run(ctx *encoder.RuntimeContext, b []byte, codeSet *encoder.OpcodeSet, opt
 			if p == 0 && code.Nilcheck {
 				b = appendNull(b)
 			} else {
-				bb, err := appendMarshalJSON(ctx, code, b, ptrToInterface(code, p), code.Indent, false)
+				bb, err := appendMarshalJSON(ctx, code, b, ptrToInterface(code, p), code.Indent+1, false)
 				if err != nil {
 					return nil, err
 				}
@@ -2905,7 +2905,7 @@ func Run(ctx *encoder.RuntimeContext, b []byte, codeSet *encoder.OpcodeSet, opt
 			if p == 0 && code.Nilcheck {
 				b = appendNull(b)
 			} else {
-				bb, err := appendMarshalJSON(ctx, code, b, ptrToInterface(code, p), code.Indent, false)
+				bb, err := appendMarshalJSON(ctx, code, b, ptrToInterface(code, p), code.Indent+1, false)
 				if err != nil {
 					return nil, err
 				}
@@ -2952,7 +2952,7 @@ func Run(ctx *encoder.RuntimeContext, b []byte, codeSet *encoder.OpcodeSet, opt
 				b = appendIndent(ctx, b, code.Indent+1)
 				b = append(b, code.Key...)
 				b = append(b, ' ')
-				bb, err := appendMarshalJSON(ctx, code, b, iface, code.Indent, false)
+				bb, err := appendMarshalJSON(ctx, code, b, iface, code.Indent+1, false)
 				if err != nil {
 					return nil, err
 				}
@@ -2994,7 +2994,7 @@ func Run(ctx *encoder.RuntimeContext, b []byte, codeSet *encoder.OpcodeSet, opt
 			if p == 0 {
 				b = appendNull(b)
 			} else {
-				bb, err := appendMarshalJSON(ctx, code, b, ptrToInterface(code, p), code.Indent, false)
+				bb, err := appendMarshalJSON(ctx, code, b, ptrToInterface(code, p), code.Indent+1, false)
 				if err != nil {
 					return nil, err
 				}
@@ -3036,7 +3036,7 @@ func Run(ctx *encoder.RuntimeContext, b []byte, codeSet *encoder.OpcodeSet, opt
 				b = appendIndent(ctx, b, code.Indent+1)
 				b = append(b, code.Key...)
 				b = append(b, ' ')
-				bb, err := appendMarshalJSON(ctx, code, b, ptrToInterface(code, p), code.Indent, false)
+				bb, err := appendMarshalJSON(ctx, code, b, ptrToInterface(code, p), code.Indent+1, false)
 				if err != nil {
 					return nil, err
 				}
@@ -3883,7 +3883,7 @@ func Run(ctx *encoder.RuntimeContext, b []byte, codeSet *encoder.OpcodeSet, opt
 			if p == 0 && code.Nilcheck {
 				b = appendNull(b)
 			} else {
-				bb, err := appendMarshalJSON(ctx, code, b, ptrToInterface(code, p), code.Indent, false)
+				bb, err := appendMarshalJSON(ctx, code, b, ptrToInterface(code, p), code.Indent+1, false)
 				if err != nil {
 					return nil, err
 				}
@@ -3904,7 +3904,7 @@ func Run(ctx *encoder.RuntimeContext, b []byte, codeSet *encoder.OpcodeSet, opt
 			b = appendIndent(ctx, b, code.Indent)
 			b = append(b, code.Key...)
 			b = append(b, ' ')
-			bb, err := appendMarshalJSON(ctx, code, b, ptrToInterface(code, p), code.Indent, false)
+			bb, err := appendMarshalJSON(ctx, code, b, ptrToInterface(code, p), code.Indent+1, false)
 			if err != nil {
 				return nil, err
 			}
@@ -3919,7 +3919,7 @@ func Run(ctx *encoder.RuntimeContext, b []byte, codeSet *encoder.OpcodeSet, opt
 			if p == 0 {
 				b = appendNull(b)
 			} else {
-				bb, err := appendMarshalJSON(ctx, code, b, ptrToInterface(code, p), code.Indent, false)
+				bb, err := appendMarshalJSON(ctx, code, b, ptrToInterface(code, p), code.Indent+1, false)
 				if err != nil {
 					return nil, err
 				}
@@ -3934,7 +3934,7 @@ func Run(ctx *encoder.RuntimeContext, b []byte, codeSet *encoder.OpcodeSet, opt
 				b = appendIndent(ctx, b, code.Indent)
 				b = append(b, code.Key...)
 				b = append(b, ' ')
-				bb, err := appendMarshalJSON(ctx, code, b, ptrToInterface(code, p), code.Indent, false)
+				bb, err := appendMarshalJSON(ctx, code, b, ptrToInterface(code, p), code.Indent+1, false)
 				if err != nil {
 					return nil, err
 				}