diff --git a/test/functional/sendheaders.py b/test/functional/sendheaders.py
index 97d64c0d9..44c357c6d 100755
--- a/test/functional/sendheaders.py
+++ b/test/functional/sendheaders.py
@@ -243,7 +243,7 @@ class SendHeadersTest(BitcoinTestFramework):
             if i == 0:
                 # first request the block
                 test_node.get_data([tip])
-                test_node.wait_for_block(tip, timeout=5)
+                test_node.wait_for_block(tip)
             elif i == 1:
                 # next try requesting header and block
                 test_node.get_headers(locator=[old_tip], hashstop=tip)
@@ -258,7 +258,7 @@ class SendHeadersTest(BitcoinTestFramework):
                 new_block = create_block(tip, create_coinbase(height+1), block_time)
                 new_block.solve()
                 test_node.send_header_for_blocks([new_block])
-                test_node.wait_for_getdata([new_block.sha256], timeout=5)
+                test_node.wait_for_getdata([new_block.sha256])
                 test_node.send_message(msg_block(new_block))
                 test_node.sync_with_ping() # make sure this block is processed
                 inv_node.clear_last_announcement()
@@ -297,18 +297,18 @@ class SendHeadersTest(BitcoinTestFramework):
                 if j == 0:
                     # Announce via inv
                     test_node.send_block_inv(tip)
-                    test_node.wait_for_getheaders(timeout=5)
+                    test_node.wait_for_getheaders()
                     # Should have received a getheaders now
                     test_node.send_header_for_blocks(blocks)
                     # Test that duplicate inv's won't result in duplicate
                     # getdata requests, or duplicate headers announcements
                     [ inv_node.send_block_inv(x.sha256) for x in blocks ]
-                    test_node.wait_for_getdata([x.sha256 for x in blocks], timeout=5)
+                    test_node.wait_for_getdata([x.sha256 for x in blocks])
                     inv_node.sync_with_ping()
                 else:
                     # Announce via headers
                     test_node.send_header_for_blocks(blocks)
-                    test_node.wait_for_getdata([x.sha256 for x in blocks], timeout=5)
+                    test_node.wait_for_getdata([x.sha256 for x in blocks])
                     # Test that duplicate headers won't result in duplicate
                     # getdata requests (the check is further down)
                     inv_node.send_header_for_blocks(blocks)
@@ -495,7 +495,7 @@ class SendHeadersTest(BitcoinTestFramework):
             with mininode_lock:
                 test_node.last_message.pop("getheaders", None)
             test_node.send_header_for_blocks([blocks[1]])
-            test_node.wait_for_getheaders(timeout=1)
+            test_node.wait_for_getheaders()
             test_node.send_header_for_blocks(blocks)
             test_node.wait_for_getdata([x.sha256 for x in blocks])
             [ test_node.send_message(msg_block(x)) for x in blocks ]
@@ -518,7 +518,7 @@ class SendHeadersTest(BitcoinTestFramework):
             with mininode_lock:
                 test_node.last_message.pop("getheaders", None)
             test_node.send_header_for_blocks([blocks[i]])
-            test_node.wait_for_getheaders(timeout=1)
+            test_node.wait_for_getheaders()
 
         # Next header will connect, should re-set our count:
         test_node.send_header_for_blocks([blocks[0]])
@@ -533,7 +533,7 @@ class SendHeadersTest(BitcoinTestFramework):
             with mininode_lock:
                 test_node.last_message.pop("getheaders", None)
             test_node.send_header_for_blocks([blocks[i%len(blocks)]])
-            test_node.wait_for_getheaders(timeout=1)
+            test_node.wait_for_getheaders()
 
         # Eventually this stops working.
         test_node.send_header_for_blocks([blocks[-1]])