Initialize registry maps

1 files changed, 4 insertions, 4 deletions

diff --git a/registry/registry.go b/registry/registry.go
index bdf841d..7f0149f 100644
--- a/registry/registry.go
+++ b/registry/registry.go
@@ -1,15 +1,15 @@
 package registry
 
 import (
-	"github.com/Shugyousha/stasher/input"
 	"github.com/Shugyousha/stasher/filter"
+	"github.com/Shugyousha/stasher/input"
 	"github.com/Shugyousha/stasher/work"
 )
 
 var (
-	Inputregistry  map[string]func(map[string]string) input.Input
-	Filterregistry map[string]func(map[string]string) filter.Filter
-	Outputregistry map[string]func(map[string]string) Output
+	Inputregistry  map[string]func(map[string]string) input.Input   = make(map[string]func(map[string]string) input.Input)
+	Filterregistry map[string]func(map[string]string) filter.Filter = make(map[string]func(map[string]string) filter.Filter)
+	Outputregistry map[string]func(map[string]string) Output        = make(map[string]func(map[string]string) Output)
 )
 
 type Output interface {