diff --git a/actions.go b/actions.go
index 85fedba..a6943ef 100644
--- a/actions.go
+++ b/actions.go
@@ -108,10 +108,10 @@ type UpdateLeverageAction struct {
 
 // UpdateIsolatedMarginAction represents isolated margin update
 type UpdateIsolatedMarginAction struct {
-	Type  string  `json:"type"  msgpack:"type"`
-	Asset int     `json:"asset" msgpack:"asset"`
-	IsBuy bool    `json:"isBuy" msgpack:"isBuy"`
-	Ntli  float64 `json:"ntli"  msgpack:"ntli"`
+	Type  string `json:"type"  msgpack:"type"`
+	Asset int    `json:"asset" msgpack:"asset"`
+	IsBuy bool   `json:"isBuy" msgpack:"isBuy"`
+	Ntli  int64  `json:"ntli"  msgpack:"ntli"`
 }
 
 // OrderWire represents the wire format for orders with deterministic field ordering
diff --git a/actions_easyjson.go b/actions_easyjson.go
index 4bad954..cc7fd45 100644
--- a/actions_easyjson.go
+++ b/actions_easyjson.go
@@ -804,7 +804,7 @@ func easyjsonB97b45a3DecodeGithubComSoniricoGoHyperliquid8(in *jlexer.Lexer, out
 			if in.IsNull() {
 				in.Skip()
 			} else {
-				out.Ntli = float64(in.Float64())
+				out.Ntli = int64(in.Int64())
 			}
 		default:
 			in.SkipRecursive()
@@ -838,7 +838,7 @@ func easyjsonB97b45a3EncodeGithubComSoniricoGoHyperliquid8(out *jwriter.Writer,
 	{
 		const prefix string = ",\"ntli\":"
 		out.RawString(prefix)
-		out.Float64(float64(in.Ntli))
+		out.Int64(int64(in.Ntli))
 	}
 	out.RawByte('}')
 }
diff --git a/examples/leverage_test.go b/examples/leverage_test.go
index 335e7c7..2031cca 100644
--- a/examples/leverage_test.go
+++ b/examples/leverage_test.go
@@ -23,7 +23,7 @@ func TestUpdateLeverage(t *testing.T) {
 func TestUpdateIsolatedMargin(t *testing.T) {
 	exchange := newTestExchange(t)
 
-	amount := 1000.0 // Amount in USD
+	amount := 100.2 // Amount in USD
 	name := "BTC"
 
 	resp, err := exchange.UpdateIsolatedMargin(context.TODO(), amount, name)
diff --git a/exchange_others.go b/exchange_others.go
index b155167..b76af77 100644
--- a/exchange_others.go
+++ b/exchange_others.go
@@ -53,7 +53,7 @@ func (e *Exchange) UpdateIsolatedMargin(
 		Type:  "updateIsolatedMargin",
 		Asset: asset,
 		IsBuy: amount > 0,
-		Ntli:  abs(amount),
+		Ntli:  int64(amount * 1000000),
 	}
 
 	var result UserState