diff --git a/test/functional/assumevalid.py b/test/functional/assumevalid.py
index 11f4125bd..46ab5a366 100755
--- a/test/functional/assumevalid.py
+++ b/test/functional/assumevalid.py
@@ -45,7 +45,7 @@ from test_framework.mininode import (CBlockHeader,
                                      msg_headers)
 from test_framework.script import (CScript, OP_TRUE)
 from test_framework.test_framework import BitcoinTestFramework
-from test_framework.util import (p2p_port, assert_equal, get_mocktime, set_mocktime, set_node_times)
+from test_framework.util import (p2p_port, assert_equal, set_node_times)
 
 class BaseNode(NodeConnCB):
     def send_header_for_blocks(self, new_blocks):
@@ -183,7 +183,7 @@ class AssumeValidTest(BitcoinTestFramework):
         node2.wait_for_verack()
 
         # Make sure nodes actually accept the many headers
-        self.set_mocktime(self.block_time)
+        self.mocktime = self.block_time
         set_node_times(self.nodes, self.mocktime)
 
         # send header lists to all three nodes.
diff --git a/test/functional/maxuploadtarget.py b/test/functional/maxuploadtarget.py
index f1bc0fd2b..8b39cc89b 100755
--- a/test/functional/maxuploadtarget.py
+++ b/test/functional/maxuploadtarget.py
@@ -44,7 +44,7 @@ class MaxUploadTest(BitcoinTestFramework):
         # Advance all nodes 2 weeks in the future
         old_mocktime = self.mocktime
         current_mocktime = old_mocktime + 2*60*60*24*7
-        self.set_mocktime(current_mocktime)
+        self.mocktime = current_mocktime
         set_node_times(self.nodes, current_mocktime)
 
         # Before we connect anything, we first set the time on the node