diff --git a/site/src/pages/tools/fcc-compliance-check.astro b/site/src/pages/tools/fcc-compliance-check.astro
index 68d1a28..6b01b35 100644
--- a/site/src/pages/tools/fcc-compliance-check.astro
+++ b/site/src/pages/tools/fcc-compliance-check.astro
@@ -295,8 +295,8 @@ import Base from "../../layouts/Base.astro";
       const dbaEl = document.getElementById("entity-dba");
       const dbaValues = [
         data.filer_499?.trade_name,
-        ...(data.rmd?.other_dba_names || []),
-      ].filter((v) => v && v !== "None" && v.trim() !== "");
+        data.rmd?.other_dba_names,
+      ].filter((v) => v && typeof v === "string" && v !== "None" && v.trim() !== "");
       if (dbaValues.length > 0) {
         dbaEl.textContent = "DBA: " + [...new Set(dbaValues)].join(", ");
         dbaEl.classList.remove("hidden");