diff --git a/pages/component/canvas/canvas-context.uvue b/pages/component/canvas/canvas-context.uvue
index 83052c766061d967b92eabe35095e9342eb726b2..8282f49b77be4c9d71c5d5d1af550297318e24a2 100644
--- a/pages/component/canvas/canvas-context.uvue
+++ b/pages/component/canvas/canvas-context.uvue
@@ -14,7 +14,7 @@
 <script>
   function hidpi(canvas : UniCanvasElement) {
     const context = canvas.getContext("2d")!;
-    const dpr = uni.getWindowInfo().pixelRatio ?? 1;
+    const dpr = uni.getWindowInfo().pixelRatio;
     canvas.width = canvas.offsetWidth * dpr;
     canvas.height = canvas.offsetHeight * dpr;
     context.scale(dpr, dpr);
diff --git a/pages/component/canvas/canvas.uvue b/pages/component/canvas/canvas.uvue
index f04faf4f6fb3a4320a9ffd266bf4a2fe1740d706..6b4defa2a2bd214ef74e3e751c01755928d0d1fe 100644
--- a/pages/component/canvas/canvas.uvue
+++ b/pages/component/canvas/canvas.uvue
@@ -47,7 +47,7 @@
 <script>
   function hidpi(canvas : UniCanvasElement) {
     const context = canvas.getContext("2d")!;
-    const dpr = uni.getWindowInfo().pixelRatio ?? 1;
+    const dpr = uni.getWindowInfo().pixelRatio;
     canvas.width = canvas.offsetWidth * dpr;
     canvas.height = canvas.offsetHeight * dpr;
     context.scale(dpr, dpr);
diff --git a/pages/component/canvas/canvas/ball.uvue b/pages/component/canvas/canvas/ball.uvue
index 1a3c52e4ed4bb98a177c9b838434dc108fe3f353..274a602eec00d67eaa7027b55667a9da52e34adb 100644
--- a/pages/component/canvas/canvas/ball.uvue
+++ b/pages/component/canvas/canvas/ball.uvue
@@ -190,7 +190,7 @@
         const renderingContext = context.getContext('2d')!;
         const canvas = renderingContext.canvas;
 
-        const dpr = uni.getWindowInfo().pixelRatio ?? 1;
+        const dpr = uni.getWindowInfo().pixelRatio;
         canvas.width = canvas.offsetWidth * dpr
         canvas.height = canvas.offsetHeight * dpr
         renderingContext.scale(dpr, dpr)
diff --git a/pages/component/canvas/canvas/doodle.uvue b/pages/component/canvas/canvas/doodle.uvue
index 0c6714e71946ab7c843c82a81d04deb8d56011f7..aade71455bdab463d10bda64eecb217dca086045 100644
--- a/pages/component/canvas/canvas/doodle.uvue
+++ b/pages/component/canvas/canvas/doodle.uvue
@@ -30,7 +30,7 @@
           this.renderingContext = context.getContext('2d')!;
           const canvas = this.renderingContext!.canvas;
 
-          const dpr = uni.getWindowInfo().pixelRatio ?? 1;
+          const dpr = uni.getWindowInfo().pixelRatio;
           canvas.width = canvas.offsetWidth * dpr
           canvas.height = canvas.offsetHeight * dpr
           this.renderingContext!.scale(dpr, dpr)