diff --git a/x/mock/simulation/constants.go b/x/mock/simulation/constants.go
index 985a22dca..544da50e3 100644
--- a/x/mock/simulation/constants.go
+++ b/x/mock/simulation/constants.go
@@ -5,10 +5,10 @@ const (
 	pastEvidenceFraction float64 = 0.5
 
 	// Minimum time per block
-	minTimePerBlock int64 = 86400 / 2
+	minTimePerBlock int64 = 1000 / 2
 
 	// Maximum time per block
-	maxTimePerBlock int64 = 86400
+	maxTimePerBlock int64 = 1000
 
 	// Number of keys
 	numKeys int = 250
diff --git a/x/stake/types/errors.go b/x/stake/types/errors.go
index 541ad3d7b..366012bbf 100644
--- a/x/stake/types/errors.go
+++ b/x/stake/types/errors.go
@@ -65,14 +65,6 @@ func ErrCommissionHuge(codespace sdk.CodespaceType) sdk.Error {
 	return sdk.NewError(codespace, CodeInvalidValidator, "commission cannot be more than 100%")
 }
 
-func ErrCommissionBeyondMax(codespace sdk.CodespaceType) sdk.Error {
-	return sdk.NewError(codespace, CodeInvalidValidator, "commission cannot be more than preset commission maximum")
-}
-
-func ErrCommissionPastRate(codespace sdk.CodespaceType) sdk.Error {
-	return sdk.NewError(codespace, CodeInvalidValidator, "commission change is greater than the commission rate, please wait before changing your commission more")
-}
-
 func ErrNilDelegatorAddr(codespace sdk.CodespaceType) sdk.Error {
 	return sdk.NewError(codespace, CodeInvalidInput, "delegator address is nil")
 }