diff --git a/x/auction/keeper/msg_server.go b/x/auction/keeper/msg_server.go
index 0739838..5edf4c0 100644
--- a/x/auction/keeper/msg_server.go
+++ b/x/auction/keeper/msg_server.go
@@ -73,7 +73,12 @@ func (k msgServer) Bid(ctx context.Context, msg *types.MsgBid) (*types.MsgBidRes
 		return nil, err
 	}
 
-	recivePrice := math.LegacyMustNewDecFromStr(auction.InitialPrice).Mul(math.LegacyMustNewDecFromStr(msg.ReciveRate))
+	reciveRate := math.LegacyMustNewDecFromStr(msg.ReciveRate)
+	params := k.GetParams(ctx)
+	if reciveRate.LT(math.LegacyMustNewDecFromStr(params.LowestRate)) || reciveRate.GT(math.LegacyMustNewDecFromStr(params.StartingRate)) {
+		return nil, fmt.Errorf("reciveRate must be greater than or equal to %s and less than or equal to %s", params.LowestRate, params.StartingRate)
+	}
+	recivePrice := math.LegacyMustNewDecFromStr(auction.InitialPrice).Mul(reciveRate)
 	// auction.InitialPrice.
 	bid := types.Bid{
 		BidId:       newBidId,
diff --git a/x/vaults/types/msgs.go b/x/vaults/types/msgs.go
index 49eb7d9..cf3bf64 100644
--- a/x/vaults/types/msgs.go
+++ b/x/vaults/types/msgs.go
@@ -151,23 +151,23 @@ func (msg *MsgActiveCollateral) ValidateBasic() error {
 	}
 
 	if msg.LiquidationRatio.LT(math.LegacyZeroDec()) {
-		return fmt.Errorf("minCollateralRatio cannot be less than 0")
+		return fmt.Errorf("LiquidationRatio 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")
+	if msg.LiquidationPenalty.LTE(math.LegacyZeroDec()) {
+		return fmt.Errorf("LiquidationPenalty cannot be less than 0")
 	}
 
-	if msg.MaxDebt.LT(math.ZeroInt()) {
-		return fmt.Errorf("minCollateralRatio cannot be less than 0")
+	if msg.MaxDebt.LTE(math.ZeroInt()) {
+		return fmt.Errorf("MaxDebt cannot be less than 0")
 	}
 
 	if msg.MintingFee.LT(math.LegacyZeroDec()) {
-		return fmt.Errorf("minCollateralRatio cannot be less than 0")
+		return fmt.Errorf("MintingFee cannot be less than 0")
 	}
 	return nil
 }