diff --git a/cmd/frostfs-adm/internal/modules/morph/generate/generate_test.go b/cmd/frostfs-adm/internal/modules/morph/generate/generate_test.go
index d4a4fee5d..1dd6420eb 100644
--- a/cmd/frostfs-adm/internal/modules/morph/generate/generate_test.go
+++ b/cmd/frostfs-adm/internal/modules/morph/generate/generate_test.go
@@ -23,8 +23,6 @@ import (
 )
 
 func TestGenerateAlphabet(t *testing.T) {
-	const size = 4
-
 	walletDir := t.TempDir()
 	buf := setupTestTerminal(t)
 
@@ -55,13 +53,13 @@ func TestGenerateAlphabet(t *testing.T) {
 	t.Run("no password for contract group wallet", func(t *testing.T) {
 		buf.Reset()
 		v.Set(commonflags.AlphabetWalletsFlag, walletDir)
-		require.NoError(t, cmd.Flags().Set(commonflags.AlphabetSizeFlag, strconv.FormatUint(size, 10)))
-		for i := uint64(0); i < size; i++ {
-			buf.WriteString(strconv.FormatUint(i, 10) + "\r")
-		}
+		require.NoError(t, cmd.Flags().Set(commonflags.AlphabetSizeFlag, "1"))
+		buf.WriteString("pass\r")
 		require.Error(t, AlphabetCreds(cmd, nil))
 	})
 
+	const size = 4
+
 	buf.Reset()
 	v.Set(commonflags.AlphabetWalletsFlag, walletDir)
 	require.NoError(t, GenerateAlphabetCmd.Flags().Set(commonflags.AlphabetSizeFlag, strconv.FormatUint(size, 10)))