--- a/dom/html/HTMLTableColElement.cpp
+++ b/dom/html/HTMLTableColElement.cpp
@@ -39,17 +39,17 @@ HTMLTableColElement::ParseAttribute(int3
 {
   if (aNamespaceID == kNameSpaceID_None) {
     /* ignore these attributes, stored simply as strings ch */
     if (aAttribute == nsGkAtoms::charoff) {
       return aResult.ParseSpecialIntValue(aValue);
     }
     if (aAttribute == nsGkAtoms::span) {
       /* protection from unrealistic large colspan values */
-      aResult.ParseIntWithFallback(aValue, 1, MAX_COLSPAN);
+      aResult.ParseClampedNonNegativeInt(aValue, 1, 1, MAX_COLSPAN);
       return true;
     }
     if (aAttribute == nsGkAtoms::width) {
       return aResult.ParseSpecialIntValue(aValue);
     }
     if (aAttribute == nsGkAtoms::align) {
       return ParseTableCellHAlignValue(aValue, aResult);
     }

--- a/dom/html/HTMLTableColElement.h
+++ b/dom/html/HTMLTableColElement.h
@@ -22,18 +22,17 @@ public:
   }
 
   uint32_t Span() const
   {
     return GetIntAttr(nsGkAtoms::span, 1);
   }
   void SetSpan(uint32_t aSpan, ErrorResult& aError)
   {
-    uint32_t span = aSpan ? aSpan : 1;
-    SetUnsignedIntAttr(nsGkAtoms::span, span, 1, aError);
+    SetUnsignedIntAttr(nsGkAtoms::span, aSpan, 1, aError);
   }
 
   void GetAlign(DOMString& aAlign)
   {
     GetHTMLAttr(nsGkAtoms::align, aAlign);
   }
   void SetAlign(const nsAString& aAlign, ErrorResult& aError)
   {

deleted file mode 100644
--- a/testing/web-platform/meta/html/dom/reflection-tabular.html.ini
+++ /dev/null
@@ -1,32 +0,0 @@
-[reflection-tabular.html]
-  type: testharness
-  [colgroup.span: setAttribute() to 2147483648]
-    expected: FAIL
-
-  [colgroup.span: setAttribute() to 4294967295]
-    expected: FAIL
-
-  [colgroup.span: setAttribute() to 4294967296]
-    expected: FAIL
-
-  [colgroup.span: IDL set to 0]
-    expected: FAIL
-
-  [colgroup.span: IDL set to "-0"]
-    expected: FAIL
-
-  [col.span: setAttribute() to 2147483648]
-    expected: FAIL
-
-  [col.span: setAttribute() to 4294967295]
-    expected: FAIL
-
-  [col.span: setAttribute() to 4294967296]
-    expected: FAIL
-
-  [col.span: IDL set to 0]
-    expected: FAIL
-
-  [col.span: IDL set to "-0"]
-    expected: FAIL
-