diff --git a/src/components/QrRendererBase.js b/src/components/QrRendererBase.js
index 76933ba..e965ff4 100644
--- a/src/components/QrRendererBase.js
+++ b/src/components/QrRendererBase.js
@@ -7,16 +7,20 @@ function listPoint(props) {
     const qrcode = props.qrcode;
     const nCount = qrcode.getModuleCount();
     const pointList = new Array(nCount);
-    const params = props.params;
 
+    let type = props.params[1];
+    let size = props.params[0];
     let id = 0;
+
+    if (size <= 0) size = 1.0
+
     for (let row = 0; row < nCount; row++) {
         for (let col = 0; col < nCount; col++) {
             if (qrcode.isDark(row, col)) {
-                if (params[1] == 0)
-                    pointList.push(<rect width={params[0]} height={params[0]} key={id++} fill="black" x={row} y={col}/>)
-                else if (params[1] == 1)
-                    pointList.push(<circle r={params[0]} key={id++} fill="black" cx={row} cy={col}/>)
+                if (type == 0)
+                    pointList.push(<rect width={size} height={size} key={id++} fill="black" x={row} y={col}/>)
+                else if (type == 1)
+                    pointList.push(<circle r={size} key={id++} fill="black" cx={row} cy={col}/>)
             }
         }
     }
diff --git a/src/components/Qrcode.js b/src/components/Qrcode.js
index cb97858..7f9ea8d 100644
--- a/src/components/Qrcode.js
+++ b/src/components/Qrcode.js
@@ -143,8 +143,9 @@ class Qrcode extends React.Component {
                     type="number"
                     className="Qr-input small-input"
                     placeholder="10"
-                    value={this.state.paramValue[this.state.selectedIndex][index]}
-                    onChange={(e) => this.setParamValue(index, e.target.value)}/>
+                    defaultValue={this.state.paramValue[this.state.selectedIndex][index]}
+                    onBlur={(e) => this.setParamValue(index, e.target.value)}
+                    onKeyPress={(e) => {if(e.key === 'Enter') {this.setParamValue(index, e.target.value); e.target.blur()}}}/>
             );
         }
     }
@@ -164,7 +165,6 @@ class Qrcode extends React.Component {
     }
 
     render() {
-        console.log(1)
         return (
             <div>
                 <div className="Qr-Centered">