diff --git a/taskcluster/ci/test/reftest.yml b/taskcluster/ci/test/reftest.yml
index adaa3a404959..5f368af44f0f 100644
--- a/taskcluster/ci/test/reftest.yml
+++ b/taskcluster/ci/test/reftest.yml
@@ -10,7 +10,6 @@ job-defaults:
             android-em-7.*: geckoview-androidTest.apk
             android-hw-.*: geckoview-androidTest.apk
             default: null
-    variants: ['fission']
     python-3: true
     tier:
         by-variant:
@@ -96,6 +95,7 @@ crashtest-qr:
     treeherder-symbol: R(C)
     chunks: 1
     e10s: true
+    variants: ['fission']
     run-on-projects:
         by-variant:
             fission: []
@@ -129,6 +129,7 @@ jsreftest:
             macosx.*64-ccov.*/.*: 7200
             linux.*64-ccov.*/.*: 7200
             default: 3600
+    variants: ['fission']
     run-on-projects:
         by-variant:
             fission: []