diff --git a/.travis.yml b/.travis.yml
index 09fc296..3a47bb5 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,7 +5,7 @@
 dart_task:
   - test
   - dartfmt
-  - dartanalyzer: --fatal-warnings .
+  - dartanalyzer: --fatal-warnings --fatal-infos .
 
 matrix:
   include:
diff --git a/lib/src/package_config_io.dart b/lib/src/package_config_io.dart
index 31bc1cc..bfbb1e3 100644
--- a/lib/src/package_config_io.dart
+++ b/lib/src/package_config_io.dart
@@ -8,7 +8,6 @@
 import "dart:io";
 import "dart:typed_data";
 
-import "discovery.dart" show packageConfigJsonPath;
 import "errors.dart";
 import "package_config_impl.dart";
 import "package_config_json.dart";