2 files changed, 4 insertions, 2 deletions
diff --git a/avahi-core/core.h b/avahi-core/core.h
index 1adf244..2951f6d 100644
--- a/avahi-core/core.h
+++ b/avahi-core/core.h
@@ -83,7 +83,8 @@ enum {
     AVAHI_ERR_TOO_MANY_ENTRIES = -18,      /**< Too many entries */
     AVAHI_ERR_OS = -19,                    /**< OS error */
     AVAHI_ERR_ACCESS_DENIED = -20,         /**< Access denied */
-    AVAHI_ERR_MAX = -21
+    AVAHI_ERR_INVALID_OPERATION = -21,     /**< Invalid operation */
+    AVAHI_ERR_MAX = -22
 };
 
 /** States of a server object */
diff --git a/avahi-core/server.c b/avahi-core/server.c
index c4acf35..541c7b7 100644
--- a/avahi-core/server.c
+++ b/avahi-core/server.c
@@ -2318,7 +2318,8 @@ const gchar *avahi_strerror(gint error) {
         "Too many objects",
         "Too many entries",
         "OS Error",
-        "Access denied"
+        "Access denied",
+        "Invalid operation"
     };
 
     return msg[-error];