1 files changed, 3 insertions, 4 deletions
diff --git a/contrib/tcpdump b/contrib/tcpdump
index 958ac8d7..259f13e0 100644
--- a/contrib/tcpdump
+++ b/contrib/tcpdump
@@ -6,11 +6,10 @@ _tcpdump()
     local cur prev
 
     COMPREPLY=()
-    cur=`_get_cword`
-    prev=${COMP_WORDS[COMP_CWORD-1]}
+    _get_comp_words_by_ref cur prev
 
-    case "$prev" in
-        -@(r|w|F))
+    case $prev in
+        -r|-w|-F)
             _filedir
             return 0
             ;;