diff --git a/command/agent/config_test.go b/command/agent/config_test.go
index 830601228..b83454bb1 100644
--- a/command/agent/config_test.go
+++ b/command/agent/config_test.go
@@ -139,6 +139,7 @@ func TestConfig_Merge(t *testing.T) {
 				"foo": "bar",
 				"baz": "zip",
 			},
+			ChrootEnv: map[string]string{},
 			ClientMaxPort:  20000,
 			ClientMinPort:  22000,
 			NetworkSpeed:   105,