diff --git a/.taskcluster.yml b/.taskcluster.yml
index 9c700e3aa40d..f5d0096d688c 100644
--- a/.taskcluster.yml
+++ b/.taskcluster.yml
@@ -22,8 +22,7 @@ scopes:
 #                   the repo url)
 # - level:          SCM level of the destination repository
 #                   (1 = try, 3 = core)
-# - revision:       (short) hg revision of the head of the push
-# - revision_hash:  (long) hg revision of the head of the push
+# - revision:       hg revision of the head of the push
 # - comment:        comment of the push
 # - pushlog_id:     id in the pushlog table of the repository
 #
@@ -105,7 +104,6 @@ tasks:
               --head-repository='{{{url}}}'
               --head-ref='{{revision}}'
               --head-rev='{{revision}}'
-              --revision-hash='{{revision_hash}}'
 
         artifacts:
           'public':
diff --git a/taskcluster/mach_commands.py b/taskcluster/mach_commands.py
index 9834819365b5..f6056d84bf2e 100644
--- a/taskcluster/mach_commands.py
+++ b/taskcluster/mach_commands.py
@@ -128,9 +128,6 @@ class MachCommands(MachCommandBase):
     @CommandArgument('--message',
                      required=True,
                      help='Commit message to be parsed. Example: "try: -b do -p all -u all"')
-    @CommandArgument('--revision-hash',
-                     required=True,
-                     help='Treeherder revision hash (long revision id) to attach results to')
     @CommandArgument('--project',
                      required=True,
                      help='Project to use for creating task graph. Example: --project=try')