diff --git a/src/gui/text/qtexthtmlparser.cpp b/src/gui/text/qtexthtmlparser.cpp
index ed1c6d97f63..a242d5e6459 100644
--- a/src/gui/text/qtexthtmlparser.cpp
+++ b/src/gui/text/qtexthtmlparser.cpp
@@ -1670,7 +1670,7 @@ void QTextHtmlParser::applyAttributes(const QStringList &attributes)
                         node->tableCellRowSpan = qMax(1, node->tableCellRowSpan);
                 } else if (key == QLatin1String("colspan")) {
                     if (setIntAttribute(&node->tableCellColSpan, value))
-                        node->tableCellColSpan = qMax(1, node->tableCellColSpan);
+                        node->tableCellColSpan = qBound(1, node->tableCellColSpan, 20480);
                 }
                 break;
             case Html_table: