diff --git a/templates/dart/lib/src/client_io.dart.twig b/templates/dart/lib/src/client_io.dart.twig
index 5b7e291c8..e93251525 100644
--- a/templates/dart/lib/src/client_io.dart.twig
+++ b/templates/dart/lib/src/client_io.dart.twig
@@ -153,7 +153,7 @@ class ClientIO extends ClientBase with ClientMixin {
     }
 
     while (offset < size) {
-      var chunk;
+      List<int> chunk = [];
       if (file.bytes != null) {
         final end = min(offset + CHUNK_SIZE-1, size-1);
         chunk = file.bytes!.getRange(offset, end).toList();
diff --git a/templates/flutter/.travis.yml.twig b/templates/flutter/.travis.yml.twig
index 8e11af1a5..1b299c31b 100644
--- a/templates/flutter/.travis.yml.twig
+++ b/templates/flutter/.travis.yml.twig
@@ -24,6 +24,6 @@ install:
 deploy:
   provider: script
   skip_cleanup: true
-  script: dart format ./lib/ && flutter pub publish -f
+  script: cd $TRAVIS_BUILD_DIR && dart format ./lib/ && flutter pub publish -f
   on:
     tags: true
diff --git a/templates/flutter/lib/src/client_io.dart.twig b/templates/flutter/lib/src/client_io.dart.twig
index 125ef2aa6..32da13e6a 100644
--- a/templates/flutter/lib/src/client_io.dart.twig
+++ b/templates/flutter/lib/src/client_io.dart.twig
@@ -274,7 +274,7 @@ class ClientIO extends ClientBase with ClientMixin {
     }
 
     while (offset < size) {
-      var chunk;
+      List<int> chunk = [];
       if (file.bytes != null) {
         final end = min(offset + CHUNK_SIZE-1, size-1);
         chunk = file.bytes!.getRange(offset, end).toList();