diff --git a/internal/encoder/code.go b/internal/encoder/code.go
index 1c079cf..9dbeca2 100644
--- a/internal/encoder/code.go
+++ b/internal/encoder/code.go
@@ -732,6 +732,9 @@ func (c *InterfaceCode) ToOpcode(ctx *compileContext) Opcodes {
 	default:
 		code = newOpCode(ctx.withType(c.typ), OpInterface)
 	}
+	if c.typ.NumMethod() > 0 {
+		code.Flags |= NonEmptyInterfaceFlags
+	}
 	ctx.incIndex()
 	return Opcodes{code}
 }
diff --git a/internal/encoder/opcode.go b/internal/encoder/opcode.go
index 309cfe6..5b16f00 100644
--- a/internal/encoder/opcode.go
+++ b/internal/encoder/opcode.go
@@ -697,22 +697,6 @@ func newMapEndCode(ctx *compileContext, head *Opcode) *Opcode {
 	}
 }
 
-func newInterfaceCode(ctx *compileContext) *Opcode {
-	var flag OpFlags
-	if ctx.typ.NumMethod() > 0 {
-		flag |= NonEmptyInterfaceFlags
-	}
-	return &Opcode{
-		Op:         OpInterface,
-		Idx:        opcodeOffset(ctx.ptrIndex),
-		Next:       newEndOp(ctx),
-		Type:       ctx.typ,
-		DisplayIdx: ctx.opcodeIndex,
-		Indent:     ctx.indent,
-		Flags:      flag,
-	}
-}
-
 func newRecursiveCode(ctx *compileContext, jmp *CompiledCode) *Opcode {
 	return &Opcode{
 		Op:         OpRecursive,