diff --git a/main.c b/main.c
index 5c288bf..f13e936 100644
--- a/main.c
+++ b/main.c
@@ -91,7 +91,7 @@ static void app_about(GSimpleAction *action, GVariant *parameter, gpointer user_
 	(void)parameter;
 	GString *comment_text;
 
-	comment_text = g_string_new("gds-render is a tool fo rendering GDS2 layout files into vector graphics.");
+	comment_text = g_string_new("gds-render is a free tool for rendering GDS2 layout files into vector graphics.");
 	g_string_append_printf(comment_text, "\n\nFull git commit: %s", _app_git_commit);
 
 	builder = gtk_builder_new_from_resource("/gui/about.glade");