diff --git a/src/adf/document.ts b/src/adf/document.ts
index c91858e..6d88590 100644
--- a/src/adf/document.ts
+++ b/src/adf/document.ts
@@ -157,11 +157,7 @@ function refusedShape(content: readonly AdfNode[]): Result<never> | undefined {
       for (let up: Step | undefined = step; up !== undefined; up = up.parent) path.unshift('content', up.index)
       return failure('unsupported-node-shape', 'an inlineCard takes no link mark: this one holds one', path)
     }
-    const children = nodeContent(step.node)
-    for (let index = children.length - 1; index >= 0; index -= 1) {
-      const node = children[index]
-      if (node !== undefined) pending.push({ index, node, parent: step })
-    }
+    for (const child of nodeContent(step.node).map((node, index) => ({ index, node, parent: step })).reverse()) pending.push(child)
   }
   return undefined
 }
diff --git a/src/conformance/property-harness.ts b/src/conformance/property-harness.ts
index fe67091..ac1960d 100644
--- a/src/conformance/property-harness.ts
+++ b/src/conformance/property-harness.ts
@@ -123,8 +123,11 @@ const autolinkTextNode = fc
   .record({ href: fc.tuple(fc.constantFrom('ab:', 'http://'), textOf(0)).map(([scheme, rest]) => `${scheme}${rest}`), marks })
   .map(({ href, marks: held }): AdfNode => ({ marks: [...held.filter((outer) => outer.type !== 'link'), { attrs: { href }, type: 'link' }], text: href, type: 'text' }))
 
+// Atlassian's schema gives a card no link mark, which every writer refuses.
+const cardMarks = marks.map((held) => held.filter(({ type }) => type !== 'link'))
+
 const inlineArbitraries = Object.entries(inlineNodes).map(([type, model]) =>
-  occasionallyEmpty(fc.record({ attrs: attributes(model.attributes), marks }).map((held): AdfNode => ({ ...held, type }))),
+  occasionallyEmpty(fc.record({ attrs: attributes(model.attributes), marks: type === 'inlineCard' ? cardMarks : marks }).map((held): AdfNode => ({ ...held, type }))),
 )
 
 function weighted(arbitraries: readonly Arbitrary<AdfNode>[], weight: number): { arbitrary: Arbitrary<AdfNode>; weight: number }[] {