diff --git a/testing/taskcluster/job_flags.yml b/testing/taskcluster/job_flags.yml
index 6fc18bd3324..53e3af539e2 100644
--- a/testing/taskcluster/job_flags.yml
+++ b/testing/taskcluster/job_flags.yml
@@ -90,6 +90,12 @@ builds:
           debug: 0
           b2g-config: 'emulator-jb'
           build-type: Opt
+      debug:
+        task: tasks/builds/b2g_emulator.yml
+        additional-parameters:
+          debug: 1
+          b2g-config: 'emulator-jb'
+          build-type: Debug
 
 # Test section covers the -u options in the try flags
 tests: