diff --git a/x/vaults/types/msgs.go b/x/vaults/types/msgs.go
index 20b3c5a..0dc5b77 100644
--- a/x/vaults/types/msgs.go
+++ b/x/vaults/types/msgs.go
@@ -139,6 +139,10 @@ func (msg *MsgActiveCollateral) ValidateBasic() error {
 		return fmt.Errorf("minCollateralRatio cannot be less than 0")
 	}
 
+	if msg.StabilityFee.LTE(math.LegacyZeroDec()) {
+		return fmt.Errorf("StabilityFee cannot be less than 0")
+	}
+
 	if msg.LiquidationPenalty.LT(math.LegacyZeroDec()) {
 		return fmt.Errorf("minCollateralRatio cannot be less than 0")
 	}
@@ -174,6 +178,10 @@ func (msg *MsgUpdatesCollateral) ValidateBasic() error {
 		return fmt.Errorf("minCollateralRatio cannot be less than 0")
 	}
 
+	if msg.StabilityFee.LTE(math.LegacyZeroDec()) {
+		return fmt.Errorf("StabilityFee cannot be less than 0")
+	}
+
 	if msg.LiquidationPenalty.LT(math.LegacyZeroDec()) {
 		return fmt.Errorf("minCollateralRatio cannot be less than 0")
 	}
diff --git a/x/vaults/types/params.go b/x/vaults/types/params.go
index 9292db5..d333699 100644
--- a/x/vaults/types/params.go
+++ b/x/vaults/types/params.go
@@ -13,7 +13,6 @@ var (
 	DefaultLiquidationPenalty    = math.LegacyMustNewDecFromStr("0.05")
 	DefaultMinInitialDebt        = math.NewInt(50_000_000)
 	DefaultRecalculateDebtPeriod = time.Hour
-	DefaultLiquidatePeriod       = time.Hour
 	DefaultMintDenom             = []string{"nomUSD"}
 
 	KeyMintingFee            = []byte("MintingFee")