diff --git a/tests/r7rs-tests.scm b/tests/r7rs-tests.scm
index 3904c43e..83da6e3b 100644
--- a/tests/r7rs-tests.scm
+++ b/tests/r7rs-tests.scm
@@ -1649,5 +1649,6 @@
 (test #t (exact? (jiffies-per-second)))
 
 (test #t (list? (features)))
+(test #t (and (memq 'r7rs (features)) #t))
 
 (test-end)