diff --git a/cli.go b/cli.go
deleted file mode 100644
index 78c6599..0000000
--- a/cli.go
+++ /dev/null
@@ -1,23 +0,0 @@
-package peco
-
-import "errors"
-
-var ErrSignalReceived = errors.New("received signal")
-
-// BufferSize returns the specified buffer size. Fulfills CtxOptions
-func (o CLIOptions) BufferSize() int {
-	return o.OptBufferSize
-}
-
-// EnableNullSep returns true if --null was specified. Fulfills CtxOptions
-func (o CLIOptions) EnableNullSep() bool {
-	return o.OptEnableNullSep
-}
-
-func (o CLIOptions) InitialIndex() int {
-	return o.OptInitialIndex
-}
-
-func (o CLIOptions) LayoutType() string {
-	return o.OptLayout
-}
diff --git a/options.go b/options.go
index a185ae3..c075b7b 100644
--- a/options.go
+++ b/options.go
@@ -10,6 +10,23 @@ import (
 	"github.com/pkg/errors"
 )
 
+// BufferSize returns the specified buffer size. Fulfills CtxOptions
+func (o CLIOptions) BufferSize() int {
+	return o.OptBufferSize
+}
+
+// EnableNullSep returns true if --null was specified. Fulfills CtxOptions
+func (o CLIOptions) EnableNullSep() bool {
+	return o.OptEnableNullSep
+}
+
+func (o CLIOptions) InitialIndex() int {
+	return o.OptInitialIndex
+}
+
+func (o CLIOptions) LayoutType() string {
+	return o.OptLayout
+}
 func (options *CLIOptions) parse(s []string) ([]string, error) {
 	p := flags.NewParser(options, flags.PrintErrors)
 	args, err := p.ParseArgs(s)