diff --git a/pkg/compiler/codegen.go b/pkg/compiler/codegen.go
index 5fe02fbec..710d58de6 100644
--- a/pkg/compiler/codegen.go
+++ b/pkg/compiler/codegen.go
@@ -1455,6 +1455,14 @@ func (c *codegen) convertBuiltin(expr *ast.CallExpr) {
 		emit.Int(c.prog.BinWriter, 3)
 		emit.Opcode(c.prog.BinWriter, opcode.ROLL)
 		emit.Opcode(c.prog.BinWriter, opcode.MIN)
+		if !c.scope.voidCalls[expr] {
+			// insert top item to the bottom of MEMCPY args, so that it is left on stack
+			emit.Opcode(c.prog.BinWriter, opcode.DUP)
+			emit.Int(c.prog.BinWriter, 6)
+			emit.Opcode(c.prog.BinWriter, opcode.REVERSEN)
+			emit.Int(c.prog.BinWriter, 5)
+			emit.Opcode(c.prog.BinWriter, opcode.REVERSEN)
+		}
 		emit.Opcode(c.prog.BinWriter, opcode.MEMCPY)
 	case "make":
 		typ := c.typeOf(expr.Args[0])
diff --git a/pkg/compiler/slice_test.go b/pkg/compiler/slice_test.go
index 6ceb967dc..ee776407f 100644
--- a/pkg/compiler/slice_test.go
+++ b/pkg/compiler/slice_test.go
@@ -427,4 +427,14 @@ func TestCopy(t *testing.T) {
 		}`
 		eval(t, src, []byte{0, 3})
 	})
+	t.Run("AssignToVariable", func(t *testing.T) {
+		src := `package foo
+		func Main() int {
+			src := []byte{3, 2, 1}
+			dst := make([]byte, 2)
+			n := copy(dst, src)
+			return n
+		}`
+		eval(t, src, big.NewInt(2))
+	})
 }