diff --git a/wifi/capture.sh b/wifi/capture.sh
index b24732d..ce0879d 100755
--- a/wifi/capture.sh
+++ b/wifi/capture.sh
@@ -51,6 +51,8 @@ NB_PKT=10
 TMP=/tmp
 # Name of the capture file:
 FILE=capture.pcap
+# Channel to scan
+CHANNEL=1
 
 ## Generated parameters ##
 # Interface to capture from:
@@ -68,9 +70,9 @@ case $OS in
 	Linux)
 		[ -x /sbin/iwconfig ] \
 			|| error "iwconfig is required to run this program on Linux!"
-		iwconfig $IFACE mode monitor \
+		iwconfig $IFACE mode monitor channel $CHANNEL \
 			&& echo "OK." \
-			|| error "Cannot switch the interface to mode monitor!"
+			|| error "Cannot configure the interface!"
 		;;
 	*)
 		error "Your OS is not supported."