diff --git a/src/primitives/absolute_locktime.rs b/src/primitives/absolute_locktime.rs
index e2373d781..db4624b3a 100644
--- a/src/primitives/absolute_locktime.rs
+++ b/src/primitives/absolute_locktime.rs
@@ -7,7 +7,7 @@ use core::{cmp, fmt};
 use bitcoin::absolute;
 
 /// Maximum allowed absolute locktime value.
-pub const MAX_ABSOLUTE_LOCKTIME: u32 = 0x8000_0000;
+pub const MAX_ABSOLUTE_LOCKTIME: u32 = 0x7FFF_FFFF;
 
 /// Minimum allowed absolute locktime value.
 ///