diff --git a/lib/rules/at-rule-no-unknown/__tests__/index.js b/lib/rules/at-rule-no-unknown/__tests__/index.js
index d5a2d1aab0..a7b554baa2 100644
--- a/lib/rules/at-rule-no-unknown/__tests__/index.js
+++ b/lib/rules/at-rule-no-unknown/__tests__/index.js
@@ -90,6 +90,8 @@ testRule({
 			message: messages.rejected('@unknown-at-rule'),
 			line: 1,
 			column: 1,
+			endLine: 1,
+			endColumn: 17,
 		},
 	],
 });
diff --git a/lib/rules/at-rule-no-unknown/index.js b/lib/rules/at-rule-no-unknown/index.js
index 66b0f95812..7776b513ad 100644
--- a/lib/rules/at-rule-no-unknown/index.js
+++ b/lib/rules/at-rule-no-unknown/index.js
@@ -55,11 +55,14 @@ const rule = (primary, secondaryOptions) => {
 				return;
 			}
 
+			const atName = `@${name}`;
+
 			report({
-				message: messages.rejected(`@${name}`),
+				message: messages.rejected(atName),
 				node: atRule,
 				ruleName,
 				result,
+				word: atName,
 			});
 		});
 	};