diff --git a/index.html b/index.html
index e7dcab4..89ac992 100644
--- a/index.html
+++ b/index.html
@@ -345,7 +345,7 @@
                         id="custom-firebase-config"
                         class="template-input"
                         style="height: 150px; font-family: monospace; font-size: 0.8rem; resize: vertical"
-                        placeholder='{"apiKey": "...", ...}'
+                        placeholder="{'apiKey': '...', ...}"
                     ></textarea>
                 </div>
                 <div class="modal-actions">