diff --git a/lib/dnssdint.h b/lib/dnssdint.h
index f81517c..6a457d0 100644
--- a/lib/dnssdint.h
+++ b/lib/dnssdint.h
@@ -20,6 +20,8 @@
 
 #include "global.h"
 
+/* the previous behavior of announcing UxPlay with a fixed public key PK
+ * can be restored by uncommenting the following line  */
 //#define PK "b07727d6f6cd6e08b58ede525ec3cdeaa252ad9f683feb212ef8a205246554e7"
 
 #define RAOP_TXTVERS "1"
diff --git a/lib/raop.c b/lib/raop.c
index 13d7c32..1cfcfb5 100644
--- a/lib/raop.c
+++ b/lib/raop.c
@@ -435,11 +435,15 @@ raop_init(int max_clients, raop_callbacks_t *callbacks) {
     }
 
     /* store PK as a string in raop->pk_str */
+#ifdef PK
+    strncpy(raop->pk_str, PK, 2*ED25519_KEY_SIZE + 1);
+#else
     unsigned char public_key[ED25519_KEY_SIZE];
     pairing_get_public_key(pairing, public_key);
     char *pk_str = utils_pk_to_string(public_key, ED25519_KEY_SIZE);
     strncpy(raop->pk_str, (const char *) pk_str, 2*ED25519_KEY_SIZE + 1);
     free(pk_str);
+#endif
 
     /* Set HTTP callbacks to our handlers */
     memset(&httpd_cbs, 0, sizeof(httpd_cbs));