diff --git a/src/frontends/qt4/GuiGraphics.cpp b/src/frontends/qt4/GuiGraphics.cpp
index 00d4c3567a..ed370ebf74 100644
--- a/src/frontends/qt4/GuiGraphics.cpp
+++ b/src/frontends/qt4/GuiGraphics.cpp
@@ -294,7 +294,7 @@ void GuiGraphics::change_adaptor()
 }
 
 
-	void GuiGraphics::change_group(int /* index */)
+void GuiGraphics::change_group(int /* index */)
 {
 	QString const new_group = groupCO->itemData(
 		groupCO->currentIndex()).toString();