diff --git a/ctaocrypt/test/test.c b/ctaocrypt/test/test.c
index 5d26f3780..ca18a6764 100644
--- a/ctaocrypt/test/test.c
+++ b/ctaocrypt/test/test.c
@@ -3870,6 +3870,10 @@ int rsa_test(void)
 #endif
     free(tmp);
 
+#if defined(HAVE_HASHDRBG) || defined(NO_RC4)
+    FreeRng(&rng);
+#endif
+
     return 0;
 }