diff --git a/apps/web/src/features/system/StartupSettings.tsx b/apps/web/src/features/system/StartupSettings.tsx
index e6ec0f4cc..91983aae1 100644
--- a/apps/web/src/features/system/StartupSettings.tsx
+++ b/apps/web/src/features/system/StartupSettings.tsx
@@ -47,7 +47,7 @@ export function StartupSettings({ configuration }: { configuration: CoreInstalla
             {configuration.settings.filter((setting) => setting.key !== "OAC_PUBLIC_URL").map((setting) => (
               <tr key={setting.key}>
                 {/* Narrow screens wrap a name after an underscore, never inside a word. */}
-                <th scope="row"><code className="system-code">{setting.key.split("_").map((part, index, parts) => index < parts.length - 1 ? [`${part}_`, <wbr key={index} />] : part)}</code></th>
+                <th scope="row"><code className="system-code system-setting-key">{setting.key.split("_").map((part, index, parts) => index < parts.length - 1 ? [`${part}_`, <wbr key={index} />] : part)}</code></th>
                 <td>
                   <span className="system-setting-value">
                     {value(setting)}
diff --git a/apps/web/src/features/system/system.css b/apps/web/src/features/system/system.css
index a42ff3bb8..dab425033 100644
--- a/apps/web/src/features/system/system.css
+++ b/apps/web/src/features/system/system.css
@@ -7,6 +7,11 @@
   overflow-wrap: anywhere;
 }
 
+/* Startup setting names break only at the <wbr> after each underscore. */
+.system-setting-key {
+  overflow-wrap: normal;
+}
+
 .system-muted {
   color: var(--ink-3);
 }