diff --git a/test/unit/support.js b/test/unit/support.js
index 88aa49e55..e6f292ad6 100644
--- a/test/unit/support.js
+++ b/test/unit/support.js
@@ -130,7 +130,7 @@ testIframe(
 			"radioValue": true,
 			"reliableMarginLeft": true
 		};
-	} else if ( /9(\.\d+|) safari/i.test( userAgent ) ) {
+	} else if ( /\b9\.\d(\.\d+)* safari/i.test( userAgent ) ) {
 		expected = {
 			"ajax": true,
 			"boxSizingReliable": true,