diff --git a/consensus/replay.go b/consensus/replay.go
index c8ab8a331..e47d4892a 100644
--- a/consensus/replay.go
+++ b/consensus/replay.go
@@ -324,7 +324,7 @@ func (h *Handshaker) ReplayBlocks(
 			}
 
 			if res.ConsensusParams != nil {
-				state.ConsensusParams = types.PB2TM.ConsensusParams(res.ConsensusParams, state.ConsensusParams.Block.TimeIotaMs)
+				state.ConsensusParams = state.ConsensusParams.Update(res.ConsensusParams)
 			}
 			sm.SaveState(h.stateDB, state)
 		}
diff --git a/types/protobuf.go b/types/protobuf.go
index e10b91869..c87e82c0a 100644
--- a/types/protobuf.go
+++ b/types/protobuf.go
@@ -220,36 +220,3 @@ func (pb2tm) ValidatorUpdates(vals []abci.ValidatorUpdate) ([]*Validator, error)
 	}
 	return tmVals, nil
 }
-
-// BlockParams.TimeIotaMs is not exposed to the application. Therefore a caller
-// must provide it.
-func (pb2tm) ConsensusParams(csp *abci.ConsensusParams, blockTimeIotaMs int64) ConsensusParams {
-	params := ConsensusParams{
-		Block:     BlockParams{},
-		Evidence:  EvidenceParams{},
-		Validator: ValidatorParams{},
-	}
-
-	// we must defensively consider any structs may be nil
-	if csp.Block != nil {
-		params.Block = BlockParams{
-			MaxBytes:   csp.Block.MaxBytes,
-			MaxGas:     csp.Block.MaxGas,
-			TimeIotaMs: blockTimeIotaMs,
-		}
-	}
-
-	if csp.Evidence != nil {
-		params.Evidence = EvidenceParams{
-			MaxAge: csp.Evidence.MaxAge,
-		}
-	}
-
-	if csp.Validator != nil {
-		params.Validator = ValidatorParams{
-			PubKeyTypes: csp.Validator.PubKeyTypes,
-		}
-	}
-
-	return params
-}
diff --git a/types/protobuf_test.go b/types/protobuf_test.go
index 152c92d12..64caa3f4c 100644
--- a/types/protobuf_test.go
+++ b/types/protobuf_test.go
@@ -64,7 +64,7 @@ func TestABCIValidators(t *testing.T) {
 func TestABCIConsensusParams(t *testing.T) {
 	cp := DefaultConsensusParams()
 	abciCP := TM2PB.ConsensusParams(cp)
-	cp2 := PB2TM.ConsensusParams(abciCP, cp.Block.TimeIotaMs)
+	cp2 := cp.Update(abciCP)
 
 	assert.Equal(t, *cp, cp2)
 }