diff --git a/html/semantics/embedded-content/the-img-element/sizes/parse-a-sizes-attribute.html b/html/semantics/embedded-content/the-img-element/sizes/parse-a-sizes-attribute.html
index bd204542081301..711af8ca32fd58 100644
--- a/html/semantics/embedded-content/the-img-element/sizes/parse-a-sizes-attribute.html
+++ b/html/semantics/embedded-content/the-img-element/sizes/parse-a-sizes-attribute.html
@@ -14,7 +14,7 @@
 function check(p, iframe) {
   var current = p.firstElementChild;
   var ref_sizes = current.getAttribute('sizes');
-  var expect = p.firstElementChild.currentSrc;
+  var expect = current.currentSrc;
   if (expect) {
     expect = expect.split('?')[0];
   }
diff --git a/html/semantics/embedded-content/the-img-element/sizes/sizes-iframed.sub.html b/html/semantics/embedded-content/the-img-element/sizes/sizes-iframed.sub.html
index 925bb46996d8df..47256487eebf95 100644
--- a/html/semantics/embedded-content/the-img-element/sizes/sizes-iframed.sub.html
+++ b/html/semantics/embedded-content/the-img-element/sizes/sizes-iframed.sub.html
@@ -52,8 +52,14 @@
 <img srcset='/images/green-1x1.png?e34 50w, /images/green-16x16.png?e34 51w' sizes='\[,1px'>
 <img srcset='/images/green-1x1.png?e35 50w, /images/green-16x16.png?e35 51w' sizes='1\p\x'>
 <img srcset='/images/green-1x1.png?e36 50w, /images/green-16x16.png?e36 51w' sizes='calc(1px)'>
+<img srcset='/images/green-1x1.png?e36a 50w, /images/green-16x16.png?e36a 51w' sizes='min(1px, 100px)'>
+<img srcset='/images/green-1x1.png?e36b 50w, /images/green-16x16.png?e36b 51w' sizes='min(-100px, 1px)'>
 <img srcset='/images/green-1x1.png?e37 50w, /images/green-16x16.png?e37 51w' sizes='(min-width:0) calc(1px)'>
+<img srcset='/images/green-1x1.png?e37a 50w, /images/green-16x16.png?e37a 51w' sizes='(min-width:0) min(1px, 100px)'>
+<img srcset='/images/green-1x1.png?e37b 50w, /images/green-16x16.png?e37b 51w' sizes='(min-width:0) max(-100px, 1px)'>
 <img srcset='/images/green-1x1.png?e38 50w, /images/green-16x16.png?e38 51w' sizes='(min-width:calc(0)) 1px'>
+<img srcset='/images/green-1x1.png?e38a 50w, /images/green-16x16.png?e38a 51w' sizes='(min-width:min(0, 200vw)) 1px'>
+<img srcset='/images/green-1x1.png?e38b 50w, /images/green-16x16.png?e38b 51w' sizes='(min-width:max(-200vw, 0)) 1px'>
 <img srcset='/images/green-1x1.png?e39 50w, /images/green-16x16.png?e39 51w' sizes='(min-width:0) 1px, 100vw'>
 <img srcset='/images/green-1x1.png?e40 50w, /images/green-16x16.png?e40 51w' sizes='(min-width:0) 1px, (min-width:0) 100vw, 100vw'>
 <img srcset='/images/green-1x1.png?e41 50w, /images/green-16x16.png?e41 51w' sizes='(min-width:0) 1px'>
@@ -126,7 +132,11 @@
 <img srcset='/images/green-1x1.png?e108 50w, /images/green-16x16.png?e108 51w' sizes='(max-width:0) or (unknown-general-enclosed !) 100vw, 1px'>
 <img srcset='/images/green-1x1.png?e109 50w, /images/green-16x16.png?e109 51w' sizes='not ((max-width:0) or (unknown "general-enclosed")) 100vw, 1px'>
 <img srcset='/images/green-1x1.png?f48 50w, /images/green-16x16.png?f48 51w' sizes='calc(1px'>
+<img srcset='/images/green-1x1.png?f48a 50w, /images/green-16x16.png?f48a 51w' sizes='min(1px, 200vw'>
+<img srcset='/images/green-1x1.png?f48b 50w, /images/green-16x16.png?f48b 51w' sizes='max(-200vw, 1px'>
 <img srcset='/images/green-1x1.png?f49 50w, /images/green-16x16.png?f49 51w' sizes='(min-width:0) calc(1px'>
+<img srcset='/images/green-1x1.png?f49a 50w, /images/green-16x16.png?f49a 51w' sizes='(min-width:0) min(1px, 200vw'>
+<img srcset='/images/green-1x1.png?f49b 50w, /images/green-16x16.png?f49b 51w' sizes='(min-width:0) max(-200vw, 1px'>
 
 <p>
 <img srcset='/images/green-1x1.png?f1 50w, /images/green-16x16.png?f1 51w' sizes='100vw'>