diff --git a/docs/REFERENCE.md b/docs/REFERENCE.md
index c081ca81755..57d6e3dad03 100644
--- a/docs/REFERENCE.md
+++ b/docs/REFERENCE.md
@@ -381,6 +381,7 @@ The following configuration variables are available:
 | `bitwarden`    | `command`             | string   | `bw`                     | Bitwarden CLI command                                  |
 | `cd`           | `args`                | []string | *none*                   | Extra args to shell in `cd` command                    |
 |                | `command`             | string   | *none*                   | Shell to run in `cd` command                           |
+| `completion`   | `custom`              | bool     | `false`                  | Enable custom shell completions                        |
 | `diff`         | `args`                | []string | *see `diff` below*       | Extra args to external diff command                    |
 |                | `command`             | string   | *none*                   | External diff command                                  |
 |                | `exclude`             | []string | *none*                   | Entry types to exclude from diffs                      |
diff --git a/internal/cmd/completioncmd.go b/internal/cmd/completioncmd.go
index bf54ced21d7..0b2c67f8899 100644
--- a/internal/cmd/completioncmd.go
+++ b/internal/cmd/completioncmd.go
@@ -7,6 +7,10 @@ import (
 	"github.com/spf13/cobra"
 )
 
+type completionCmdConfig struct {
+	Custom bool `mapstructure:"custom"`
+}
+
 func (c *Config) newCompletionCmd() *cobra.Command {
 	completionCmd := &cobra.Command{
 		Use:       "completion shell",
diff --git a/internal/cmd/config.go b/internal/cmd/config.go
index a6dc3a805e0..9b2fa8e2f89 100644
--- a/internal/cmd/config.go
+++ b/internal/cmd/config.go
@@ -122,13 +122,14 @@ type Config struct {
 	keyring keyringData
 
 	// Command configurations, settable in the config file.
-	Add   addCmdConfig   `mapstructure:"add"`
-	CD    cdCmdConfig    `mapstructure:"cd"`
-	Diff  diffCmdConfig  `mapstructure:"diff"`
-	Docs  docsCmdConfig  `mapstructure:"docs"`
-	Edit  editCmdConfig  `mapstructure:"edit"`
-	Git   gitCmdConfig   `mapstructure:"git"`
-	Merge mergeCmdConfig `mapstructure:"merge"`
+	Add        addCmdConfig        `mapstructure:"add"`
+	CD         cdCmdConfig         `mapstructure:"cd"`
+	Completion completionCmdConfig `mapstructure:"completion"`
+	Diff       diffCmdConfig       `mapstructure:"diff"`
+	Docs       docsCmdConfig       `mapstructure:"docs"`
+	Edit       editCmdConfig       `mapstructure:"edit"`
+	Git        gitCmdConfig        `mapstructure:"git"`
+	Merge      mergeCmdConfig      `mapstructure:"merge"`
 
 	// Command configurations, not settable in the config file.
 	apply           applyCmdConfig
@@ -1954,6 +1955,10 @@ func (c *Config) targetRelPathsBySourcePath(
 func (c *Config) targetValidArgs(
 	cmd *cobra.Command, args []string, toComplete string,
 ) ([]string, cobra.ShellCompDirective) {
+	if !c.Completion.Custom {
+		return nil, cobra.ShellCompDirectiveDefault
+	}
+
 	toCompleteAbsPath, err := chezmoi.NewAbsPathFromExtPath(toComplete, c.homeDirAbsPath)
 	if err != nil {
 		cobra.CompErrorln(err.Error())
diff --git a/internal/cmd/testdata/scripts/completion_unix.txt b/internal/cmd/testdata/scripts/completion_unix.txt
index fc65224f36a..d5da7e3aade 100644
--- a/internal/cmd/testdata/scripts/completion_unix.txt
+++ b/internal/cmd/testdata/scripts/completion_unix.txt
@@ -44,6 +44,9 @@ $HOME/.file
 -- golden/complete-target-home-dot-f --
 $HOME/.file
 :4
+-- home/user/.config/chezmoi/chezmoi.toml --
+[completion]
+    custom = true
 -- home/user/.local/share/chezmoi/dot_dir/file --
 # contents of .dir/file
 -- home/user/.local/share/chezmoi/dot_file --