diff --git a/chain/actors/builtin/miner/v0.go b/chain/actors/builtin/miner/v0.go
index 14718d002..1b1c817b6 100644
--- a/chain/actors/builtin/miner/v0.go
+++ b/chain/actors/builtin/miner/v0.go
@@ -274,7 +274,7 @@ func (s *state0) DeadlinesChanged(other State) (bool, error) {
 		return true, nil
 	}
 
-	return s.State.Deadlines.Equals(other0.Deadlines), nil
+	return !s.State.Deadlines.Equals(other0.Deadlines), nil
 }
 
 func (s *state0) Info() (MinerInfo, error) {
diff --git a/chain/actors/builtin/miner/v2.go b/chain/actors/builtin/miner/v2.go
index 9e599f891..7217f6b58 100644
--- a/chain/actors/builtin/miner/v2.go
+++ b/chain/actors/builtin/miner/v2.go
@@ -273,7 +273,7 @@ func (s *state2) DeadlinesChanged(other State) (bool, error) {
 		return true, nil
 	}
 
-	return s.State.Deadlines.Equals(other2.Deadlines), nil
+	return !s.State.Deadlines.Equals(other2.Deadlines), nil
 }
 
 func (s *state2) Info() (MinerInfo, error) {