diff --git a/taskcluster/taskgraph/transforms/build_signing.py b/taskcluster/taskgraph/transforms/build_signing.py
index 25c1ae37575b..c3f33a1ab1f1 100644
--- a/taskcluster/taskgraph/transforms/build_signing.py
+++ b/taskcluster/taskgraph/transforms/build_signing.py
@@ -42,14 +42,9 @@ def make_signing_description(config, jobs):
             dep_job.attributes.get('build_platform'),
             dep_job.attributes.get('nightly')
         )
-
         label = dep_job.label.replace("build-", "signing-")
         job['label'] = label
 
-        # Announce job status on funsize specific routes, so that it can
-        # start the partial generation for nightlies only.
-        job['use-funsize-route'] = True
-
         yield job
 
 
diff --git a/taskcluster/taskgraph/transforms/nightly_l10n_signing.py b/taskcluster/taskgraph/transforms/nightly_l10n_signing.py
index d27aade3451c..1828d31bcaa9 100644
--- a/taskcluster/taskgraph/transforms/nightly_l10n_signing.py
+++ b/taskcluster/taskgraph/transforms/nightly_l10n_signing.py
@@ -76,8 +76,4 @@ def make_signing_description(config, jobs):
             'symbol': join_symbol(group, symbol),
         }
 
-        # Announce job status on funsize specific routes, so that it can
-        # start the partial generation for nightlies only.
-        job['use-funsize-route'] = True
-
         yield job
diff --git a/taskcluster/taskgraph/transforms/signing.py b/taskcluster/taskgraph/transforms/signing.py
index e0a2405ea65a..655bcd5db9d4 100644
--- a/taskcluster/taskgraph/transforms/signing.py
+++ b/taskcluster/taskgraph/transforms/signing.py
@@ -59,10 +59,6 @@ signing_description_schema = Schema({
 
     # Routes specific to this task, if defined
     Optional('routes'): [basestring],
-
-    # If True, adds a route which funsize uses to schedule generation of partial mar
-    # files for updates. Expected to be added on nightly builds only.
-    Optional('use-funsize-route'): bool,
 })
 
 
@@ -141,8 +137,8 @@ def make_task_description(config, jobs):
             'routes': job.get('routes', []),
         }
 
-        if 'macosx' not in dep_job.attributes.get('build_platform') and \
-                job.get('use-funsize-route', False):
+        if 'linux' in dep_job.attributes.get('build_platform') and \
+                dep_job.attributes.get('nightly'):
             task['routes'].append("project.releng.funsize.level-{level}.{project}".format(
                 project=config.params['project'], level=config.params['level']))