diff --git a/src/corelib/kernel/qwinregistry.cpp b/src/corelib/kernel/qwinregistry.cpp
index 59d30fd4a35..cac5769e3b9 100644
--- a/src/corelib/kernel/qwinregistry.cpp
+++ b/src/corelib/kernel/qwinregistry.cpp
@@ -120,6 +120,10 @@ QVariant QWinRegistryKey::value(QStringView subKey) const
     return {};
 }
 
+// Returns the value of the specified subKey as a string, obtained using
+// qvariant_cast from the underlying QVariant. If that value is not a string,
+// or the subKey has no value, a string whose isNull() is true is returned.
+// Otherwise, the resulting string (which may be empty) is returned.
 QString QWinRegistryKey::stringValue(QStringView subKey) const
 {
     return value<QString>(subKey).value_or(QString());
diff --git a/src/corelib/kernel/qwinregistry_p.h b/src/corelib/kernel/qwinregistry_p.h
index e767e92f92a..8623ab1b1c6 100644
--- a/src/corelib/kernel/qwinregistry_p.h
+++ b/src/corelib/kernel/qwinregistry_p.h
@@ -56,7 +56,6 @@ public:
         return std::nullopt;
     }
 
-    // ### TODO: Remove once all usages are migrated to new interface.
     QString stringValue(QStringView subKey) const;
 
 private: