diff --git a/lib/util/ast.js b/lib/util/ast.js
index a1e16ea..b36f3ad 100644
--- a/lib/util/ast.js
+++ b/lib/util/ast.js
@@ -29,10 +29,9 @@ function getNodeName(node) {
 }
 
 function isDescribe(node, additionalSuiteNames = []) {
-    const describeAliases = getSuiteNames({ modifiers: [ 'skip', 'only' ] });
+    const describeAliases = getSuiteNames({ modifiers: [ 'skip', 'only' ], additionalSuiteNames });
 
-    return isCallExpression(node) &&
-      describeAliases.concat(additionalSuiteNames).indexOf(getNodeName(node.callee)) > -1;
+    return isCallExpression(node) && describeAliases.indexOf(getNodeName(node.callee)) > -1;
 }
 
 function isHookIdentifier(node) {