diff --git a/src/gui/text/qtexthtmlparser.cpp b/src/gui/text/qtexthtmlparser.cpp
index 3eb131b5c0..c2a0fcbec9 100644
--- a/src/gui/text/qtexthtmlparser.cpp
+++ b/src/gui/text/qtexthtmlparser.cpp
@@ -1381,6 +1381,7 @@ void QTextHtmlParserNode::applyCssDeclarations(const QList<QCss::Declaration> &d
     QFont f;
     int adjustment = -255;
     extractor.extractFont(&f, &adjustment);
+    f.setPixelSize(qMin(f.pixelSize(), INT32_MAX / 2));   // avoid even more extreme values
     charFormat.setFont(f, QTextCharFormat::FontPropertiesSpecifiedOnly);
 
     if (adjustment >= -1)