diff --git a/qa/rpc-tests/keypool.py b/qa/rpc-tests/keypool.py
index aee29a596..1f8979692 100755
--- a/qa/rpc-tests/keypool.py
+++ b/qa/rpc-tests/keypool.py
@@ -98,7 +98,7 @@ def main():
             os.makedirs(options.tmpdir)
         initialize_chain(options.tmpdir)
 
-        nodes = start_nodes(1, options.tmpdir)
+        nodes = start_nodes(1, options.tmpdir, extra_args=[['-developerencryptwallet']])
 
         run_test(nodes, options.tmpdir)
 
diff --git a/qa/rpc-tests/wallet_nullifiers.py b/qa/rpc-tests/wallet_nullifiers.py
index 7efd70f6a..6d7449138 100755
--- a/qa/rpc-tests/wallet_nullifiers.py
+++ b/qa/rpc-tests/wallet_nullifiers.py
@@ -10,6 +10,10 @@ from time import *
 
 class WalletNullifiersTest (BitcoinTestFramework):
 
+    def setup_nodes(self):
+        return start_nodes(4, self.options.tmpdir,
+                           extra_args=[['-developerencryptwallet']] * 4)
+
     def run_test (self):
         # add zaddr to node 0
         myzaddr0 = self.nodes[0].z_getnewaddress()