diff --git a/test/headless/headless.cpp b/test/headless/headless.cpp
index 24f9fd1a6..aa2a9202a 100644
--- a/test/headless/headless.cpp
+++ b/test/headless/headless.cpp
@@ -86,7 +86,7 @@ TEST_P(HeadlessTest, render) {
                 }
             }
 
-            if (source->value.HasMember("url")) {
+            if (source->value.HasMember("url") && source->value["url"].IsString()) {
                 rewriteLocalScheme(source->value["url"], styleDoc.GetAllocator());
             }
         }
diff --git a/test/suite b/test/suite
index 6ac151538..fe4b1ff37 160000
--- a/test/suite
+++ b/test/suite
@@ -1 +1 @@
-Subproject commit 6ac15153826ab26f778d61034119ffa8f97566ac
+Subproject commit fe4b1ff3717b1b67b82391f004db6c163806d080