diff --git a/importexport/musicxml/musicxmlsupport.cpp b/importexport/musicxml/musicxmlsupport.cpp
index 0842ad016e38b..0afc8442bd8a7 100644
--- a/importexport/musicxml/musicxmlsupport.cpp
+++ b/importexport/musicxml/musicxmlsupport.cpp
@@ -481,6 +481,8 @@ QString accidentalType2MxmlString(const AccidentalType type)
             case AccidentalType::SHARP_SLASH3:       s = "slash-quarter-sharp";  break;
             case AccidentalType::FLAT_SLASH2:        s = "double-slash-flat";    break;
             case AccidentalType::SHARP_SLASH2:       s = "slash-sharp";          break;
+            case AccidentalType::ARROW_DOWN:         s = "arrow-down";           break;
+            case AccidentalType::ARROW_UP:           s = "arrow-up";             break;
             case AccidentalType::SORI:               s = "sori";                 break;
             case AccidentalType::KORON:              s = "koron";                break;
             default:
@@ -520,6 +522,8 @@ AccidentalType mxmlString2accidentalType(const QString mxmlName)
       map["natural-up"] = AccidentalType::NATURAL_ARROW_UP;
       map["flat-down"] = AccidentalType::FLAT_ARROW_DOWN;
       map["flat-up"] = AccidentalType::FLAT_ARROW_UP;
+      map["arrow-down"] = AccidentalType::ARROW_DOWN;
+      map["arrow-up"] = AccidentalType::ARROW_UP;
 
       map["slash-quarter-sharp"] = AccidentalType::SHARP_SLASH3; // MIRRORED_FLAT_SLASH; ?
       map["slash-sharp"] = AccidentalType::SHARP_SLASH2; // SHARP_SLASH; ?
@@ -535,7 +539,6 @@ AccidentalType mxmlString2accidentalType(const QString mxmlName)
             return map.value(mxmlName);
       else
             qDebug("mxmlString2accidentalType: unknown accidental '%s'", qPrintable(mxmlName));
-      // default: return AccidentalType::NONE
       return AccidentalType::NONE;
       }