diff --git a/test/functional/p2p_filter.py b/test/functional/p2p_filter.py
--- a/test/functional/p2p_filter.py
+++ b/test/functional/p2p_filter.py
@@ -11,6 +11,7 @@
     MSG_FILTERED_BLOCK,
     msg_getdata,
     msg_filterload,
+    msg_filterclear,
 )
 from test_framework.mininode import (
     P2PInterface,
@@ -103,6 +104,15 @@
         filter_node.wait_for_tx(txid)
         assert not filter_node.merkleblock_received
 
+        self.log.info(
+            'Check that after deleting filter all txs get relayed again')
+        filter_node.send_message(msg_filterclear())
+        filter_node.sync_with_ping()
+        for _ in range(5):
+            txid = self.nodes[0].sendtoaddress(
+                self.nodes[0].getnewaddress(), 7)
+            filter_node.wait_for_tx(txid)
+
 
 if __name__ == '__main__':
     FilterTest().main()
diff --git a/test/functional/test_framework/messages.py b/test/functional/test_framework/messages.py
--- a/test/functional/test_framework/messages.py
+++ b/test/functional/test_framework/messages.py
@@ -1353,6 +1353,23 @@
             self.data, self.nHashFuncs, self.nTweak, self.nFlags)
 
 
+class msg_filterclear:
+    __slots__ = ()
+    command = b"filterclear"
+
+    def __init__(self):
+        pass
+
+    def deserialize(self, f):
+        pass
+
+    def serialize(self):
+        return b""
+
+    def __repr__(self):
+        return "msg_filterclear()"
+
+
 class msg_feefilter:
     __slots__ = ("feerate",)
     command = b"feefilter"
diff --git a/test/functional/test_framework/mininode.py b/test/functional/test_framework/mininode.py
--- a/test/functional/test_framework/mininode.py
+++ b/test/functional/test_framework/mininode.py
@@ -32,6 +32,7 @@
     msg_blocktxn,
     msg_cmpctblock,
     msg_feefilter,
+    msg_filterclear,
     msg_filterload,
     msg_getaddr,
     msg_getblocks,
@@ -68,6 +69,7 @@
     b"blocktxn": msg_blocktxn,
     b"cmpctblock": msg_cmpctblock,
     b"feefilter": msg_feefilter,
+    b"filterclear": msg_filterclear,
     b"filterload": msg_filterload,
     b"getaddr": msg_getaddr,
     b"getblocks": msg_getblocks,
@@ -369,6 +371,8 @@
 
     def on_feefilter(self, message): pass
 
+    def on_filterclear(self, message): pass
+
     def on_filterload(self, message): pass
 
     def on_getaddr(self, message): pass