diff --git a/cmd/commandfuncs.go b/cmd/commandfuncs.go
index ce71c63421973d6da8e4a0bc00a522949d3f5188..fc9553d06b221608f4e331bb48dfad5dedcf04a5 100644
--- a/cmd/commandfuncs.go
+++ b/cmd/commandfuncs.go
@@ -763,7 +763,7 @@ func configFileWithRespectToDefault(logger *zap.Logger, configFile string) (stri
 	const defaultGatfile = "Gatfile"
 
 	// if no input file was specified, try a default Gatfile if the Gatfile adapter is plugged in
-	if configFile == "" && caddyconfig.GetAdapter("caddyfile") != nil {
+	if configFile == "" && caddyconfig.GetAdapter("gatfile") != nil {
 		_, err := os.Stat(defaultGatfile)
 		if err == nil {
 			// default Gatfile exists
diff --git a/cmd/commands.go b/cmd/commands.go
index 4abd59545b12d71db4af924a18e779abf30cd1a1..41ceadee3d98cac64c2b66dad51527398bf2de24 100644
--- a/cmd/commands.go
+++ b/cmd/commands.go
@@ -265,7 +265,7 @@ zero exit status will be returned.
 `,
 		CobraFunc: func(cmd *cobra.Command) {
 			cmd.Flags().StringP("config", "c", "", "Configuration file to adapt (required)")
-			cmd.Flags().StringP("adapter", "a", "caddyfile", "Name of config adapter")
+			cmd.Flags().StringP("adapter", "a", "gatfile", "Name of config adapter")
 			cmd.Flags().BoolP("pretty", "p", false, "Format the output for human readability")
 			cmd.Flags().BoolP("validate", "", false, "Validate the output")
 			cmd.RunE = WrapCommandFuncForCobra(cmdAdaptConfig)