diff --git a/x/auth/types/params.go b/x/auth/types/params.go
index 5374534417ff..5acc4e62b06d 100644
--- a/x/auth/types/params.go
+++ b/x/auth/types/params.go
@@ -10,7 +10,7 @@ import (
 
 // Default parameter values
 const (
-	DefaultMaxMemoCharacters      uint64 = 256
+	DefaultMaxMemoCharacters      uint64 = 128
 	DefaultTxSigLimit             uint64 = 7
 	DefaultTxSizeCostPerByte      uint64 = 10
 	DefaultSigVerifyCostED25519   uint64 = 590
@@ -71,8 +71,10 @@ func DefaultParams() Params {
 
 // SigVerifyCostSecp256r1 returns gas fee of secp256r1 signature verification.
 // Set by benchmarking current implementation:
-//     BenchmarkSig/secp256k1     4334   277167 ns/op   4128 B/op   79 allocs/op
-//     BenchmarkSig/secp256r1    10000   108769 ns/op   1672 B/op   33 allocs/op
+//
+//	BenchmarkSig/secp256k1     4334   277167 ns/op   4128 B/op   79 allocs/op
+//	BenchmarkSig/secp256r1    10000   108769 ns/op   1672 B/op   33 allocs/op
+//
 // Based on the results above secp256k1 is 2.7x is slwer. However we propose to discount it
 // because we are we don't compare the cgo implementation of secp256k1, which is faster.
 func (p Params) SigVerifyCostSecp256r1() uint64 {
diff --git a/x/mint/types/params.go b/x/mint/types/params.go
index 69a909af05bc..104338a12f43 100644
--- a/x/mint/types/params.go
+++ b/x/mint/types/params.go
@@ -47,7 +47,7 @@ func DefaultParams() Params {
 		InflationMax:        sdk.NewDecWithPrec(20, 2),
 		InflationMin:        sdk.NewDecWithPrec(7, 2),
 		GoalBonded:          sdk.NewDecWithPrec(67, 2),
-		BlocksPerYear:       uint64(60 * 60 * 8766 / 5), // assuming 5 second block times
+		BlocksPerYear:       uint64(60 * 60 * 8766 / 15), // assuming 15 second block times
 	}
 }
 
diff --git a/x/slashing/types/params.go b/x/slashing/types/params.go
index ad1d98c37f15..70122a3e5b1a 100644
--- a/x/slashing/types/params.go
+++ b/x/slashing/types/params.go
@@ -10,7 +10,7 @@ import (
 
 // Default parameter namespace
 const (
-	DefaultSignedBlocksWindow   = int64(100)
+	DefaultSignedBlocksWindow   = int64(5760) // 4 (blocks per min) * 60 (mins in hour) * 24 (hours in day) = 5760 blocks per day
 	DefaultDowntimeJailDuration = 60 * 10 * time.Second
 )
 
diff --git a/x/staking/types/params.go b/x/staking/types/params.go
index 191b66e4c809..3f30ec4f935f 100644
--- a/x/staking/types/params.go
+++ b/x/staking/types/params.go
@@ -32,8 +32,8 @@ const (
 	DefaultHistoricalEntries uint32 = 10000
 )
 
-// DefaultMinCommissionRate is set to 0%
-var DefaultMinCommissionRate = sdk.ZeroDec()
+// DefaultMinCommissionRate is set to .05
+var DefaultMinCommissionRate = sdk.NewDecWithPrec(5, 2)
 
 var (
 	KeyUnbondingTime     = []byte("UnbondingTime")