diff --git a/modules/imgcodecs/src/ios_conversions.mm b/modules/imgcodecs/src/ios_conversions.mm
index 2db873acd0d4..202cfe30d1f0 100644
--- a/modules/imgcodecs/src/ios_conversions.mm
+++ b/modules/imgcodecs/src/ios_conversions.mm
@@ -97,7 +97,7 @@
 void UIImageToMat(const UIImage* image,
                          cv::Mat& m, bool alphaExist) {
     CGColorSpaceRef colorSpace = CGImageGetColorSpace(image.CGImage);
-    CGFloat cols = image.size.width, rows = image.size.height;
+    CGFloat cols = CGImageGetWidth(image.CGImage), rows = CGImageGetHeight(image.CGImage);
     CGContextRef contextRef;
     CGBitmapInfo bitmapInfo = kCGImageAlphaPremultipliedLast;
     if (CGColorSpaceGetModel(colorSpace) == kCGColorSpaceModelMonochrome)