diff --git a/internal/cmd/instance/main.go b/internal/cmd/instance/main.go
index 1b4a133..95f7124 100644
--- a/internal/cmd/instance/main.go
+++ b/internal/cmd/instance/main.go
@@ -39,7 +39,7 @@ func NewCmd() *cobra.Command {
 	_ = viper.BindEnv("pgdata", "PGDATA")
 	_ = viper.BindEnv("spool-directory", "SPOOL_DIRECTORY")
 	_ = viper.BindEnv("custom-cnpg-group", "CUSTOM_CNPG_GROUP")
-	_ = viper.BindEnv("custom-cnpg-version", "CUSTOM_CNPG_VERSIONXS")
+	_ = viper.BindEnv("custom-cnpg-version", "CUSTOM_CNPG_VERSION")
 
 	return cmd
 }