diff -r 366509ae2f37 -r dd4ee1d4122c common/corpus-common-addon/lib/commands/dl-fixtures.js
--- a/common/corpus-common-addon/lib/commands/dl-fixtures.js	Sat May 07 10:06:26 2016 +0200
+++ b/common/corpus-common-addon/lib/commands/dl-fixtures.js	Sat May 07 15:15:01 2016 +0200
@@ -129,7 +129,7 @@
                 deferred.resolve();
             });
             return deferred.promise;
-        });
+        }.bind(this));
     },
     run: function(commandOptions, rawArgs) { // eslint-disable-line no-unused-vars