diff --git a/shell/platform/fuchsia/flutter/platform_view.cc b/shell/platform/fuchsia/flutter/platform_view.cc
index 66a276144810a..2c285fd218c73 100644
--- a/shell/platform/fuchsia/flutter/platform_view.cc
+++ b/shell/platform/fuchsia/flutter/platform_view.cc
@@ -487,9 +487,9 @@ bool PlatformView::OnChildViewStateChanged(scenic::ResourceId view_holder_id,
   out << "{"
       << "\"method\":\"View.viewStateChanged\","
       << "\"args\":{"
-      << "  \"viewId\":" << view_id_mapping->second  // ViewHolderToken handle
-      << "  \"is_rendering\":" << is_rendering       // IsViewRendering
-      << "  \"state\":" << is_rendering              // IsViewRendering
+      << "  \"viewId\":" << view_id_mapping->second << ","  // ViewHolderToken
+      << "  \"is_rendering\":" << is_rendering << ","       // IsViewRendering
+      << "  \"state\":" << is_rendering                     // IsViewRendering
       << "  }"
       << "}";
   auto call = out.str();
diff --git a/shell/platform/fuchsia/flutter/platform_view_unittest.cc b/shell/platform/fuchsia/flutter/platform_view_unittest.cc
index 3873081ddbab6..cc98224473547 100644
--- a/shell/platform/fuchsia/flutter/platform_view_unittest.cc
+++ b/shell/platform/fuchsia/flutter/platform_view_unittest.cc
@@ -876,9 +876,9 @@ TEST_F(PlatformViewTests, ViewEventsTest) {
       << "{"
       << "\"method\":\"View.viewStateChanged\","
       << "\"args\":{"
-      << "  \"viewId\":" << kViewId     // ViewHolderToken handle
-      << "  \"is_rendering\":" << true  // IsViewRendering
-      << "  \"state\":" << true         // IsViewRendering
+      << "  \"viewId\":" << kViewId << ","     // ViewHolderToken
+      << "  \"is_rendering\":" << true << ","  // IsViewRendering
+      << "  \"state\":" << true                // IsViewRendering
       << "  }"
       << "}";
   EXPECT_EQ(view_state_changed_expected_out.str(),