diff --git a/src/plugins/help/localhelpmanager.cpp b/src/plugins/help/localhelpmanager.cpp
index 929286687d8..dee3ef7332d 100644
--- a/src/plugins/help/localhelpmanager.cpp
+++ b/src/plugins/help/localhelpmanager.cpp
@@ -81,7 +81,7 @@ static QString defaultFallbackFontFamily()
     if (Utils::HostOsInfo::isMacHost())
         return QString("Helvetica");
     if (Utils::HostOsInfo::isAnyUnixHost())
-        return QString("sans-serif");
+        return QString("Sans Serif");
     return QString("Arial");
 }