diff --git a/bitcoin/src/blockdata/script/borrowed.rs b/bitcoin/src/blockdata/script/borrowed.rs
index e1fe91b78..a922d7313 100644
--- a/bitcoin/src/blockdata/script/borrowed.rs
+++ b/bitcoin/src/blockdata/script/borrowed.rs
@@ -12,7 +12,7 @@ use super::{
 use crate::consensus::Encodable;
 use crate::opcodes::all::*;
 use crate::opcodes::{self, Opcode};
-use crate::policy::DUST_RELAY_TX_FEE;
+use crate::policy::{DUST_RELAY_TX_FEE, MAX_OP_RETURN_RELAY};
 use crate::prelude::{sink, DisplayHex, String, ToString};
 use crate::taproot::{LeafVersion, TapLeafHash, TapLeafHashExt as _};
 use crate::FeeRate;
@@ -217,7 +217,7 @@ crate::internal_macros::define_extension_trait! {
         /// What this function considers to be standard may change without warning pending Bitcoin Core
         /// changes.
         #[inline]
-        fn is_standard_op_return(&self) -> bool { self.is_op_return() && self.len() <= 80 }
+        fn is_standard_op_return(&self) -> bool { self.is_op_return() && self.len() <= MAX_OP_RETURN_RELAY }
 
         /// Checks whether a script is trivially known to have no satisfying input.
         ///
diff --git a/bitcoin/src/blockdata/script/tests.rs b/bitcoin/src/blockdata/script/tests.rs
index 5a3409af6..7010bb19b 100644
--- a/bitcoin/src/blockdata/script/tests.rs
+++ b/bitcoin/src/blockdata/script/tests.rs
@@ -416,8 +416,10 @@ fn standard_op_return() {
     assert!(ScriptBuf::from_hex("6a48656c6c6f2c2074686973206973206d7920666972737420636f6e747269627574696f6e20746f207275737420626974636f696e2e20506c6561736520617070726f7665206d79205052206672656e")
         .unwrap()
         .is_standard_op_return());
-
-    assert!(!ScriptBuf::from_hex("6a48656c6c6f2c2074686973206973206d7920666972737420636f6e747269627574696f6e20746f207275737420626974636f696e2e20506c6561736520617070726f7665206d79205052206672656e21")
+    assert!(ScriptBuf::from_hex("6a48656c6c6f2c2074686973206973206d7920666972737420636f6e747269627574696f6e20746f207275737420626974636f696e2e20506c6561736520617070726f7665206d79205052206672656e21")
+        .unwrap()
+        .is_standard_op_return());
+    assert!(!ScriptBuf::from_hex("6a48656c6c6f2c2074686973206973206d7920666972737420636f6e747269627574696f6e20746f207275737420626974636f696e2e20506c6561736520617070726f7665206d79205052206672656e21524f42")
         .unwrap()
         .is_standard_op_return());
 }
diff --git a/bitcoin/src/policy.rs b/bitcoin/src/policy.rs
index 35c2dda8b..89eb08261 100644
--- a/bitcoin/src/policy.rs
+++ b/bitcoin/src/policy.rs
@@ -43,6 +43,9 @@ pub const DEFAULT_MIN_RELAY_TX_FEE: u32 = 1_000;
 /// mempools.
 pub const DEFAULT_MEMPOOL_EXPIRY: u32 = 336;
 
+// 80 bytes of data, +1 for OP_RETURN, +2 for the pushdata opcodes.
+pub(crate) const MAX_OP_RETURN_RELAY: usize = 83;
+
 /// The virtual transaction size, as computed by default by bitcoind node.
 pub fn get_virtual_tx_size(weight: i64, n_sigops: i64) -> i64 {
     (cmp::max(weight, n_sigops * DEFAULT_BYTES_PER_SIGOP as i64) + WITNESS_SCALE_FACTOR as i64 - 1)