diff --git a/testsuite/gtk/stylecontext.c b/testsuite/gtk/stylecontext.c
index 25c3881eec..9dc703953b 100644
--- a/testsuite/gtk/stylecontext.c
+++ b/testsuite/gtk/stylecontext.c
@@ -12,6 +12,7 @@ test_parse_selectors (void)
     "E {}",
     "E F {}",
     "E > F {}",
+    "E + F {}",
     "E#id {}",
     "#id {}",
     "tab:first-child {}",