diff --git a/cmd/evaluate_all_command.go b/cmd/evaluate_all_command.go
index d3589cb8..b56a9cc4 100644
--- a/cmd/evaluate_all_command.go
+++ b/cmd/evaluate_all_command.go
@@ -75,7 +75,12 @@ func evaluateAll(cmd *cobra.Command, args []string) (cmdError error) {
 		return err
 	}
 
-	decoder, err := configureDecoder(true, args[0])
+	inputFilename := ""
+	if len(args) > 0 {
+		inputFilename = args[0]
+	}
+
+	decoder, err := configureDecoder(true, inputFilename)
 	if err != nil {
 		return err
 	}
diff --git a/cmd/evalute_sequence_command.go b/cmd/evalute_sequence_command.go
index 94df3b56..bc69698f 100644
--- a/cmd/evalute_sequence_command.go
+++ b/cmd/evalute_sequence_command.go
@@ -100,7 +100,12 @@ func evaluateSequence(cmd *cobra.Command, args []string) (cmdError error) {
 
 	printer := yqlib.NewPrinter(encoder, printerWriter)
 
-	decoder, err := configureDecoder(false, args[0])
+	inputFilename := ""
+	if len(args) > 0 {
+		inputFilename = args[0]
+	}
+
+	decoder, err := configureDecoder(false, inputFilename)
 	if err != nil {
 		return err
 	}