diff --git a/UI/window-basic-settings.cpp b/UI/window-basic-settings.cpp
index 717fe77f5..91a37b78b 100644
--- a/UI/window-basic-settings.cpp
+++ b/UI/window-basic-settings.cpp
@@ -5701,7 +5701,6 @@ static void DisableIncompatibleSimpleCodecs(QComboBox *cbox,
 {
 	/* Unlike in advanced mode the available simple mode encoders are
 	 * hardcoded, so this check is also a simpler, hardcoded one. */
-	QString formatUpper = QString(format).toUpper();
 	QString encoder = cbox->currentData().toString();
 
 	bool currentCompatible = true;