diff --git a/model/UhkBuffer.ts b/model/UhkBuffer.ts
index 63729ed4..1e1a3a00 100644
--- a/model/UhkBuffer.ts
+++ b/model/UhkBuffer.ts
@@ -2,42 +2,42 @@ class UhkBuffer {
     buffer: Buffer;
     offset: number;
 
-    constructor(buffer) {
+    constructor(buffer:Buffer) {
         this.offset = 0;
         this.buffer = buffer;
     }
 
-    writeInt8(value) {
+    writeInt8(value:number):void {
         this.buffer.writeInt8(value, this.offset);
         this.offset += 1;
     }
 
-    writeUint8(value) {
+    writeUint8(value:number):void {
         this.buffer.writeUInt8(value, this.offset);
         this.offset += 1;
     }
 
-    writeInt16(value) {
+    writeInt16(value:number):void {
         this.buffer.writeInt16LE(value, this.offset);
         this.offset += 2;
     }
 
-    writeUint16(value) {
+    writeUint16(value:number):void {
         this.buffer.writeUInt16LE(value, this.offset);
         this.offset += 2;
     }
 
-    writeInt32(value) {
+    writeInt32(value:number):void {
         this.buffer.writeInt32LE(value, this.offset);
         this.offset += 4;
     }
 
-    writeUint32(value) {
+    writeUint32(value:number):void {
         this.buffer.writeUInt32LE(value, this.offset);
         this.offset += 4;
     }
 
-    writeString(string) {
+    writeString(string:string):void {
         this.buffer.write(string, this.offset, string.length, 'ascii');
         this.offset += string.length;
         this.writeUint8(0);