diff --git a/src/gui/kernel/qguiapplication.cpp b/src/gui/kernel/qguiapplication.cpp
index 1894dbf3ba..f429ad2229 100644
--- a/src/gui/kernel/qguiapplication.cpp
+++ b/src/gui/kernel/qguiapplication.cpp
@@ -490,6 +490,12 @@ static QWindowGeometrySpecification windowGeometrySpecification;
         \li \c{-platformtheme} \e platformTheme, specifies the platform theme.
 
             Overridden by the \c QT_QPA_PLATFORMTHEME environment variable.
+
+        \li \c{-plugin} \e plugin, specifies additional plugins to load. The argument
+            may appear multiple times.
+
+            Overridden by the \c QT_QPA_GENERIC_PLUGINS environment variable.
+
         \li \c{-qmljsdebugger=}, activates the QML/JS debugger with a specified port.
             The value must be of format \c{port:1234}\e{[,block]}, where
             \e block is optional