diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..4a51448
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,6 @@
+#.gitignore
+
+.DS_Store
+/.build
+/Packages
+Package.resolved
\ No newline at end of file
diff --git a/HCKalmanFilter/HCMatrixObject.swift b/HCKalmanFilter/HCMatrixObject.swift
index d99d301..2f74e92 100644
--- a/HCKalmanFilter/HCMatrixObject.swift
+++ b/HCKalmanFilter/HCMatrixObject.swift
@@ -173,7 +173,7 @@ class HCMatrixObject
     {
         let result = HCMatrixObject(rows: left.rows, columns: left.columns)
         
-        result.matrix = Surge.add(left.matrix, y: right.matrix)
+        result.matrix = Surge.add(left.matrix, right.matrix)
         
         return result
     }
@@ -214,7 +214,7 @@ class HCMatrixObject
     /// - returns: result HCMatrixObject object of multiplication operation
     static func *(left:HCMatrixObject, right:HCMatrixObject) -> HCMatrixObject?
     {
-        let resultMatrix = Surge.mul(left.matrix, y: right.matrix)
+        let resultMatrix = Surge.mul(left.matrix, right.matrix)
         
         let result = HCMatrixObject(rows: resultMatrix.rows,columns: resultMatrix.columns)
         result.matrix = resultMatrix
diff --git a/Package.swift b/Package.swift
new file mode 100644
index 0000000..83a69e5
--- /dev/null
+++ b/Package.swift
@@ -0,0 +1,24 @@
+// swift-tools-version:5.0
+// The swift-tools-version declares the minimum version of Swift required to build this package.
+
+import PackageDescription
+
+let package = Package(
+    name: "HCKalmanFilter",
+    products: [
+        .library(
+            name: "HCKalmanFilter",
+            targets: ["HCKalmanFilter"]
+        ),
+    ],
+    dependencies: [
+        .package(url: "https://github.com/Jounce/Surge", from: "2.0.0"),
+    ],
+    targets: [
+        .target(
+            name: "HCKalmanFilter",
+            dependencies: ["Surge"],
+            path: "HCKalmanFilter"
+        ),
+    ]
+)