diff --git a/completions/cppcheck b/completions/cppcheck
index fc982511..272166bc 100644
--- a/completions/cppcheck
+++ b/completions/cppcheck
@@ -9,7 +9,7 @@ _cppcheck()
 
     case $prev in
         --append|--exitcode-suppressions|--file-list|--rule-file|\
-        --suppressions-list)
+        --suppressions-list|-i)
             _filedir
             return
             ;;
@@ -25,7 +25,7 @@ _cppcheck()
             COMPREPLY=( $( compgen -W '{0..255}' -- "$cur" ) )
             return
             ;;
-        -I|-i)
+        -I)
             _filedir -d
             return
             ;;