diff --git a/input_definition.go b/input_definition.go
index 0e5375507..d9cc543b5 100644
--- a/input_definition.go
+++ b/input_definition.go
@@ -278,9 +278,7 @@ func (i *InputDefinitionInfo) Validate(columnLabel string) error {
 
 	// Validate columnLabel and duplicate primaryKey.
 	for _, field := range i.Fields {
-		var actionCount int
 		for _, action := range field.Actions {
-			actionCount++
 			if err := action.Validate(); err != nil {
 				return err
 			}
@@ -300,7 +298,7 @@ func (i *InputDefinitionInfo) Validate(columnLabel string) error {
 			if field.Name != columnLabel {
 				return ErrInputDefinitionColumnLabel
 			}
-		} else if actionCount == 0 {
+		} else if len(field.Actions) == 0 {
 			return ErrInputDefinitionActionRequired
 		}
 	}