diff --git a/lightning/src/ln/channel.rs b/lightning/src/ln/channel.rs
index ced35306b08..d8305d7e3ee 100644
--- a/lightning/src/ln/channel.rs
+++ b/lightning/src/ln/channel.rs
@@ -305,7 +305,7 @@ macro_rules! define_state_flags {
 
 		impl core::ops::Not for $flag_type {
 			type Output = Self;
-			fn not(self) -> Self::Output { Self(!self.0) }
+			fn not(self) -> Self::Output { Self(!self.0 & Self::ALL.0) }
 		}
 		impl core::ops::BitOr for $flag_type {
 			type Output = Self;