--- a/taskcluster/ci/legacy/tasks/tests/fx_linux64_mochitest_bc.yml
+++ b/taskcluster/ci/legacy/tasks/tests/fx_linux64_mochitest_bc.yml
@@ -14,16 +14,17 @@ task:
       - --total-chunk={{total_chunks}}
       - --this-chunk={{chunk}}
     env:
         MOZHARNESS_SCRIPT: 'mozharness/scripts/desktop_unittest.py'
         # TODO move linux_unittest.py to a platform specific config
         MOZHARNESS_CONFIG: >
           mozharness/configs/unittests/linux_unittest.py
           mozharness/configs/remove_executables.py
+    maxRunTime: 5400
   scopes:
     - 'docker-worker:capability:device:loopbackVideo'
   metadata:
     name: '[TC] Linux64 mochitest-browser-chrome-{{chunk}}'
     description: Mochitest browser-chrome run {{chunk}}
   extra:
     chunks:
       total: 7

--- a/taskcluster/ci/legacy/tasks/tests/fx_linux64_mochitest_bc_dbg.yml
+++ b/taskcluster/ci/legacy/tasks/tests/fx_linux64_mochitest_bc_dbg.yml
@@ -1,8 +1,7 @@
 ---
 $inherits:
   from: 'tasks/tests/fx_linux64_mochitest_bc.yml'
 task:
   payload:
     command:
       - --download-symbols=true
-    maxRunTime: 5400

--- a/taskcluster/ci/legacy/tasks/tests/fx_linux64_mochitest_bc_e10s.yml
+++ b/taskcluster/ci/legacy/tasks/tests/fx_linux64_mochitest_bc_e10s.yml
@@ -15,16 +15,17 @@ task:
       - --this-chunk={{chunk}}
       - --e10s
     env:
         MOZHARNESS_SCRIPT: 'mozharness/scripts/desktop_unittest.py'
         # TODO move linux_unittest.py to a platform specific config
         MOZHARNESS_CONFIG: >
           mozharness/configs/unittests/linux_unittest.py
           mozharness/configs/remove_executables.py
+    maxRunTime: 5400
   scopes:
     - 'docker-worker:capability:device:loopbackVideo'
   metadata:
     name: '[TC] Linux64 mochitest-browser-chrome-e10s-{{chunk}}'
     description: Mochitest browser-chrome e10s run {{chunk}}
   extra:
     chunks:
       total: 7

--- a/taskcluster/ci/legacy/tasks/tests/fx_linux64_mochitest_bc_e10s_dbg.yml
+++ b/taskcluster/ci/legacy/tasks/tests/fx_linux64_mochitest_bc_e10s_dbg.yml
@@ -1,8 +1,7 @@
 ---
 $inherits:
   from: 'tasks/tests/fx_linux64_mochitest_bc_e10s.yml'
 task:
   payload:
     command:
       - --download-symbols=true
-    maxRunTime: 5400