diff --git a/crypto/x509v3/v3_cpols.c b/crypto/x509v3/v3_cpols.c
index b452ac4e5..1f0798b94 100644
--- a/crypto/x509v3/v3_cpols.c
+++ b/crypto/x509v3/v3_cpols.c
@@ -453,4 +453,5 @@ void X509_POLICY_NODE_print(BIO *out, X509_POLICY_NODE *node, int indent)
 
 
 IMPLEMENT_STACK_OF(X509_POLICY_NODE)
+IMPLEMENT_STACK_OF(X509_POLICY_DATA)