diff --git a/util/alloc.h b/util/alloc.h
index 50da0c2ed..bcb48350c 100644
--- a/util/alloc.h
+++ b/util/alloc.h
@@ -204,7 +204,9 @@ char* unbound_lite_wrapstr(char* s);
 #  define ldns_pkt2str(p) unbound_lite_wrapstr(ldns_pkt2str(p))
 #  define ldns_pkt_rcode2str(r) unbound_lite_wrapstr(ldns_pkt_rcode2str(r))
 #  define ldns_pkt2wire(a, r, s) unbound_lite_pkt2wire(a, r, s)
+#include "ldns/packet.h"
 ldns_status unbound_lite_pkt2wire(uint8_t **dest, const ldns_pkt *p, size_t *size);
+#include "openssl/ssl.h"
 #  define i2d_DSA_SIG(d, s) unbound_lite_i2d_DSA_SIG(d, s)
 int unbound_lite_i2d_DSA_SIG(DSA_SIG* dsasig, unsigned char** sig);
 #endif /* UNBOUND_ALLOC_LITE */