1 files changed, 6 insertions, 1 deletions
diff --git a/src/gui/text/qfontdatabase.cpp b/src/gui/text/qfontdatabase.cpp
index d2da24ca94..5145385fdc 100644
--- a/src/gui/text/qfontdatabase.cpp
+++ b/src/gui/text/qfontdatabase.cpp
@@ -406,9 +406,14 @@ QtFontFoundry *QtFontFamily::foundry(const QString &f, bool create)
     return foundries[count++];
 }
 
+static inline bool equalsCaseInsensitive(const QString &a, const QString &b)
+{
+    return a.size() == b.size() && a.compare(b, Qt::CaseInsensitive) == 0;
+}
+
 bool QtFontFamily::matchesFamilyName(const QString &familyName) const
 {
-    return name.compare(familyName, Qt::CaseInsensitive) == 0 || aliases.contains(familyName, Qt::CaseInsensitive);
+    return equalsCaseInsensitive(name, familyName) || aliases.contains(familyName, Qt::CaseInsensitive);
 }
 
 void QtFontFamily::ensurePopulated()