1 files changed, 5 insertions, 0 deletions

diff --git a/src/firejail/protocol.c b/src/firejail/protocol.c
index e6a8f61ab..407f8c62d 100644
--- a/src/firejail/protocol.c
+++ b/src/firejail/protocol.c
@@ -119,6 +119,11 @@ void protocol_list(void) {
 void protocol_store(const char *prlist) {
         assert(prlist);
         
+        if (cfg.protocol) {
+                fprintf(stderr, "Warning: a protocol list is present, the new list \"%s\" will not be installed\n", prlist);
+                return;
+        }
+        
         // temporary list
         char *tmplist = strdup(prlist);
         if (!tmplist)