diff --git a/src/corelib/tools/qchar.h b/src/corelib/tools/qchar.h
index 266effb66a5..1955758fca9 100644
--- a/src/corelib/tools/qchar.h
+++ b/src/corelib/tools/qchar.h
@@ -358,6 +358,9 @@ public:
         case QChar::Joining_Causing: return QChar::Center;
         case QChar::Joining_Dual: return QChar::Dual;
         case QChar::Joining_Right: return QChar::Right;
+        case QChar::Joining_None:
+        case QChar::Joining_Left:
+        case QChar::Joining_Transparent:
         default: return QChar::OtherJoining;
         }
     }
diff --git a/src/corelib/tools/qstring.h b/src/corelib/tools/qstring.h
index 2d9a42957ec..359d0c49e52 100644
--- a/src/corelib/tools/qstring.h
+++ b/src/corelib/tools/qstring.h
@@ -954,6 +954,9 @@ public:
         case QChar::Joining_Causing: return QChar::Center;
         case QChar::Joining_Dual: return QChar::Dual;
         case QChar::Joining_Right: return QChar::Right;
+        case QChar::Joining_None:
+        case QChar::Joining_Left:
+        case QChar::Joining_Transparent:
         default: return QChar::OtherJoining;
         }
     }