diff --git a/src/azure-cli-core/azure/cli/core/commands/transform.py b/src/azure-cli-core/azure/cli/core/commands/transform.py
index 329d3c39607..70d51225dfb 100644
--- a/src/azure-cli-core/azure/cli/core/commands/transform.py
+++ b/src/azure-cli-core/azure/cli/core/commands/transform.py
@@ -15,6 +15,11 @@ def register_global_transforms(cli_ctx):
     cli_ctx.register_event(events.EVENT_INVOKER_TRANSFORM_RESULT, _x509_from_base64_to_hex_transform)
 
 
+def unregister_global_transforms(cli_ctx):
+    cli_ctx.unregister_event(events.EVENT_INVOKER_TRANSFORM_RESULT, _resource_group_transform)
+    cli_ctx.unregister_event(events.EVENT_INVOKER_TRANSFORM_RESULT, _x509_from_base64_to_hex_transform)
+
+
 def _parse_id(strid):
     parsed = {}
     parts = re.split('/', strid)
diff --git a/src/azure-cli/azure/cli/command_modules/util/custom.py b/src/azure-cli/azure/cli/command_modules/util/custom.py
index c8dff41fc8e..13c8343da75 100644
--- a/src/azure-cli/azure/cli/command_modules/util/custom.py
+++ b/src/azure-cli/azure/cli/command_modules/util/custom.py
@@ -15,6 +15,10 @@
 
 def rest_call(cmd, url, method=None, headers=None, uri_parameters=None,
               body=None, skip_authorization_header=False, resource=None, output_file=None):
+    from azure.cli.core.commands.transform import unregister_global_transforms
+    # No transform should be performed on `az rest`.
+    unregister_global_transforms(cmd.cli_ctx)
+
     from azure.cli.core.util import send_raw_request
     r = send_raw_request(cmd.cli_ctx, method, url, headers, uri_parameters, body,
                          skip_authorization_header, resource, output_file)