diff --git a/assets/js/server-selector.js b/assets/js/server-selector.js
index ad74ffb..057b2a9 100644
--- a/assets/js/server-selector.js
+++ b/assets/js/server-selector.js
@@ -196,8 +196,7 @@ function validateVersionSave(modalName) {
 
     if (
         matchingVersions.length > allowedMatches ||
-        nameInput.value.length < parseInt(nameInput.getAttribute("minlength")) ||
-        nameInput.value.length > parseInt(nameInput.getAttribute("maxlength"))
+        !(new RegExp(nameInput.getAttribute("pattern"))).test(nameInput.value)
     ) {
         nameInput.classList.add("invalidinput");
         valid = false;
diff --git a/index.html b/index.html
index ff29600..76fa3d0 100644
--- a/index.html
+++ b/index.html
@@ -266,6 +266,7 @@
                                     type="text"
                                     id="addserver-ipinput"
                                     placeholder="127.0.0.1:23000"
+                                    value="127.0.0.1:23000"
                                     required=""
                                     pattern="^([-a-zA-Z0-9]+\.)+[-a-zA-Z0-9]+:[0-9]+$"
                                     oninput="validateServerSave('add')"
@@ -588,8 +589,7 @@
                                     id="addversion-nameinput"
                                     placeholder="custom-build-000"
                                     required=""
-                                    minlength="1"
-                                    maxlength="70"
+                                    pattern="^[-a-zA-Z0-9_]{1,70}$"
                                     oninput="validateVersionSave('add')"
                                 /><label for="addversion-urlinput"
                                     >Version URL</label
@@ -655,8 +655,7 @@
                                     id="editversion-nameinput"
                                     placeholder="custom-build-000"
                                     required=""
-                                    minlength="1"
-                                    maxlength="70"
+                                    pattern="^[-a-zA-Z0-9_]{1,70}$"
                                     oninput="validateVersionSave('edit')"
                                 /><label for="editversion-urlinput"
                                     >Version URL</label