diff --git a/effects/_test/slidetabs/slidetabs.desktop b/effects/_test/slidetabs/slidetabs.desktop
index 9cede00edb..db8587765f 100644
--- a/effects/_test/slidetabs/slidetabs.desktop
+++ b/effects/_test/slidetabs/slidetabs.desktop
@@ -10,7 +10,7 @@ Name[x-test]=xxSlide Tabsxx
 Icon=preferences-system-windows-effect-slidetabs
 
 Type=Service
-Comment=Slide windows when switching or groupping tabs.
+Comment=Slide windows when switching or grouping tabs.
 Comment[pt]=Deslizar as janelas pelo ecrã ao mudar de páginas.
 Comment[pt_BR]=Desliza as janelas ao alternar ou agrupar abas.
 Comment[sv]=Låt fönster glida vid byte eller gruppering av flikar.