diff --git a/src/libsysprof-ui/sysprof-visualizer-group-header.c b/src/libsysprof-ui/sysprof-visualizer-group-header.c
index 9fc1a435..11d5fd4e 100644
--- a/src/libsysprof-ui/sysprof-visualizer-group-header.c
+++ b/src/libsysprof-ui/sysprof-visualizer-group-header.c
@@ -138,7 +138,7 @@ _sysprof_visualizer_group_header_add_row (SysprofVisualizerGroupHeader *self,
                              "direction", GTK_ARROW_RIGHT,
                              "halign", GTK_ALIGN_CENTER,
                              "menu-model", menu,
-                             "tooltip-text", _("Display supplimental graphs"),
+                             "tooltip-text", _("Display supplemental graphs"),
                              "use-popover", FALSE,
                              "valign", GTK_ALIGN_CENTER,
                              "visible", TRUE,