diff --git a/src/gui/text/qtextformat.cpp b/src/gui/text/qtextformat.cpp
index 444850039bb..d47bbfc132d 100644
--- a/src/gui/text/qtextformat.cpp
+++ b/src/gui/text/qtextformat.cpp
@@ -455,6 +455,12 @@ Q_GUI_EXPORT QDataStream &operator<<(QDataStream &stream, const QTextFormat &fmt
             properties[QTextFormat::OldFontStretch] = it.value();
             properties.erase(it);
         }
+
+        it = properties.find(QTextFormat::TextUnderlineColor);
+        if (it != properties.end()) {
+            properties[QTextFormat::OldTextUnderlineColor] = it.value();
+            properties.erase(it);
+        }
     }
 
     stream << fmt.format_type << properties;
@@ -478,6 +484,8 @@ Q_GUI_EXPORT QDataStream &operator>>(QDataStream &stream, QTextFormat &fmt)
             key = QTextFormat::FontLetterSpacingType;
         else if (key == QTextFormat::OldFontStretch)
             key = QTextFormat::FontStretch;
+        else if (key == QTextFormat::OldTextUnderlineColor)
+            key = QTextFormat::TextUnderlineColor;
         fmt.d->insertProperty(key, it.value());
     }
 
diff --git a/src/gui/text/qtextformat.h b/src/gui/text/qtextformat.h
index e1668f83629..87de1e7fbd3 100644
--- a/src/gui/text/qtextformat.h
+++ b/src/gui/text/qtextformat.h
@@ -222,6 +222,7 @@ public:
         // Should not be referenced in user code.
         OldFontLetterSpacingType = 0x2033,
         OldFontStretch = 0x2034,
+        OldTextUnderlineColor = 0x2010,
 
         ObjectType = 0x2f00,