diff --git a/contrib/completion/hx.bash b/contrib/completion/hx.bash
index 8a2d9777bc3f..89f3283c8257 100644
--- a/contrib/completion/hx.bash
+++ b/contrib/completion/hx.bash
@@ -16,7 +16,7 @@ _hx() {
 		COMPREPLY=($(compgen -W "$languages" -- $2))
 		;;
 	*)
-		COMPREPLY=($(compgen -fd -W "-h --help --tutor -V --version -v -vv -vvv --health -g --grammar --vsplit --hsplit -c --config" -- $2))
+		COMPREPLY=($(compgen -fd -W "-h --help --tutor -V --version -v -vv -vvv --health -g --grammar --vsplit --hsplit -c --config --log" -- $2))
 		;;
 	esac
 } && complete -F _hx hx
diff --git a/contrib/completion/hx.elv b/contrib/completion/hx.elv
index d3d227bcb566..42c88585c155 100644
--- a/contrib/completion/hx.elv
+++ b/contrib/completion/hx.elv
@@ -36,6 +36,11 @@ set edit:completion:arg-completer[hx] = {|@args|
       edit:complete-filename $args[-1] | each { |v| put $v[stem] }
       return
     } 
+    # When we have --log, we need a file
+    if (has-values "log" $args[-2]) {
+      edit:complete-filename $args[-1] | each { |v| put $v[stem] }
+      return
+    } 
   } 
   edit:complete-filename $args[-1] | each { |v| put $v[stem]}
   $candidate "--help" "(Prints help information)"
@@ -46,4 +51,5 @@ set edit:completion:arg-completer[hx] = {|@args|
   $candidate "--vsplit" "(Splits all given files vertically)"
   $candidate "--hsplit" "(Splits all given files horizontally)"
   $candidate "--config" "(Specifies a file to use for configuration)"
-}
\ No newline at end of file
+  $candidate "--log" "(Specifies a file to write log data into)"
+}
diff --git a/contrib/completion/hx.fish b/contrib/completion/hx.fish
index 65f248d4234d..71c74ab04493 100644
--- a/contrib/completion/hx.fish
+++ b/contrib/completion/hx.fish
@@ -12,3 +12,4 @@ complete -c hx -s V -l version -d "Prints version information"
 complete -c hx -l vsplit -d "Splits all given files vertically into different windows"
 complete -c hx -l hsplit -d "Splits all given files horizontally into different windows"
 complete -c hx -s c -l config -d "Specifies a file to use for completion"
+complete -c hx -s c -l log -d "Specifies a file to write log data into"
diff --git a/contrib/completion/hx.zsh b/contrib/completion/hx.zsh
index e3375656d65a..aaad6f844a08 100644
--- a/contrib/completion/hx.zsh
+++ b/contrib/completion/hx.zsh
@@ -18,6 +18,7 @@ _hx() {
 		"--hsplit[Splits all given files horizontally into different windows]" \
 		"-c[Specifies a file to use for configuration]" \
 		"--config[Specifies a file to use for configuration]" \
+		"--log[Specifies a file to write log data into]" \
 		"*:file:_files"
 
 	case "$state" in