diff --git a/isotpsniffer.c b/isotpsniffer.c
index 44331fc..1bb4489 100644
--- a/isotpsniffer.c
+++ b/isotpsniffer.c
@@ -322,11 +322,6 @@ int main(int argc, char **argv)
 		goto out;
 	}
 
-	if ((setsockopt(s, SOL_CAN_ISOTP, CAN_ISOTP_LL_OPTS, &llopts, sizeof(llopts))) < 0) {
-		perror("setsockopt");
-		r = 1;
-		goto out;
-	}
 	if ((setsockopt(t, SOL_CAN_ISOTP, CAN_ISOTP_LL_OPTS, &llopts, sizeof(llopts))) < 0) {
 		perror("setsockopt");
 		r = 1;