1 files changed, 1 insertions, 1 deletions

diff --git a/src/firejail/main.c b/src/firejail/main.c
index f672c32d9..3f7a26b64 100644
--- a/src/firejail/main.c
+++ b/src/firejail/main.c
@@ -1069,7 +1069,7 @@ int main(int argc, char **argv) {
                                 return 1;
                         }
 
-                        if (sscanf(argv[i] + 6, "%d", &br->mtu) != 1 || br->mtu < 68 || br->mtu > 9198) {
+                        if (sscanf(argv[i] + 6, "%d", &br->mtu) != 1 || br->mtu < 576 || br->mtu > 9198) {
                                 fprintf(stderr, "Error: invalid mtu value\n");
                                 return 1;
                         }