diff --git a/lib/des/rsa.c b/lib/des/rsa.c
index 29f143b52..26ef933c2 100644
--- a/lib/des/rsa.c
+++ b/lib/des/rsa.c
@@ -108,6 +108,8 @@ RSA_free(RSA *rsa)
     free_if(rsa->d);
     free_if(rsa->p);
     free_if(rsa->q);
+    free_if(rsa->dmp1);
+    free_if(rsa->dmq1);
 #undef free_if
 
     memset(rsa, 0, sizeof(*rsa));