diff --git a/server/pcap_capture.c b/server/pcap_capture.c
index 47be8605..64d49fb4 100644
--- a/server/pcap_capture.c
+++ b/server/pcap_capture.c
@@ -171,7 +171,8 @@ pcap_capture(fko_srv_options_t *opts)
      *       to actually use this mode (which when set on a FreeBSD
      *       system, it silently breaks the packet capture).
     */
-    if((pcap_setnonblock(pcap, DEF_PCAP_NONBLOCK, errstr)) == -1)
+    if((pcap_file_mode == 0)
+            && (pcap_setnonblock(pcap, DEF_PCAP_NONBLOCK, errstr)) == -1)
     {
         log_msg(LOG_ERR, "[*] Error setting pcap nonblocking to %i: %s",
             0, errstr