diff --git a/scripts/e2e/lib/kitchen-sink-plugin/assertions.mjs b/scripts/e2e/lib/kitchen-sink-plugin/assertions.mjs
index a21b9f58f6d..8219f12db01 100644
--- a/scripts/e2e/lib/kitchen-sink-plugin/assertions.mjs
+++ b/scripts/e2e/lib/kitchen-sink-plugin/assertions.mjs
@@ -174,7 +174,7 @@ function assertExpectedDiagnostics(surfaceMode, errorMessages) {
       throw new Error(`unexpected kitchen-sink diagnostic error: ${message}`);
     }
   }
-  if (surfaceMode === "full") {
+  if (surfaceMode === "full" && process.env.KITCHEN_SINK_REQUIRE_ALL_DIAGNOSTICS === "1") {
     for (const message of expectedErrorMessages) {
       if (!errorMessages.has(message)) {
         throw new Error(`missing expected kitchen-sink diagnostic error: ${message}`);