diff --git a/webinterface/modules.py b/webinterface/modules.py
index 9679e31c..33c9b8e8 100755
--- a/webinterface/modules.py
+++ b/webinterface/modules.py
@@ -112,6 +112,9 @@ async def add_module(request):
     form = dict(await request.form())
     name = form.get("name", "")
 
+    if "/" in name:
+        return PlainTextResponse("Invalid module name provided.")
+
     if name in config.mercure.modules:
         return PlainTextResponse("A module with this name already exists.")
 
diff --git a/webinterface/templates/modules.html b/webinterface/templates/modules.html
index 36acb9ed..51f2e014 100755
--- a/webinterface/templates/modules.html
+++ b/webinterface/templates/modules.html
@@ -73,7 +73,7 @@ <h1 class="title">Processing Modules</h1>
                     <form hx-post="./" hx-target="#addmodal_message" htmx-added="title">
                         <div class="field">
                             <p class="control">
-                                <input class="input" id="addnewname" type="text" required pattern="[-_A-Za-z0-9]+"
+                                <input class="input" id="addnewname" type="text" required pattern="[0-9a-zA-Z_\-]+"
                                        placeholder="Name of module" name="name" autofocus>
                             </p>
                         </div>
diff --git a/webinterface/templates/queue.html b/webinterface/templates/queue.html
index a91d200e..f52fb285 100755
--- a/webinterface/templates/queue.html
+++ b/webinterface/templates/queue.html
@@ -193,7 +193,7 @@ <h5 class="title is-5 configtitle" style="margin-top: 60px;"><i
                 <div class="panel" data-content="archive">
                     <div class="field has-addons" style="margin-top: 30px; margin-bottom: 30px;">
                         <div class="control is-expanded">
-                            <input name="job_archive_search" id="job_archive_search" pattern="[-_A-Za-z0-9]+" onkeyup="this.value = this.value.replace(/[{}\x22\n]/g, '')"
+                            <input name="job_archive_search" id="job_archive_search" pattern="[0-9a-zA-Z_\-]+" onkeyup="this.value = this.value.replace(/[{}\x22\n]/g, '')"
                             class="input series_completion_fix" autocomplete='off' type="text" placeholder="Find job by ACC, MRN, or patient name">
                         </div>
                         <div class="control">
diff --git a/webinterface/templates/rules.html b/webinterface/templates/rules.html
index 70f9b223..fd35b838 100755
--- a/webinterface/templates/rules.html
+++ b/webinterface/templates/rules.html
@@ -125,7 +125,7 @@ <h1 class="title">DICOM Rules</h1>
                 <form method="post">
                     <div class="field">
                         <p class="control">
-                            <input class="input" id="addnewname" type="text" required pattern="[-_A-Za-z0-9]+"
+                            <input class="input" id="addnewname" type="text" required pattern="[0-9a-zA-Z_\-]+"
                                 placeholder="Name of rule" name="name" autofocus>
                         </p>
                     </div>
diff --git a/webinterface/templates/targets.html b/webinterface/templates/targets.html
index 3a307297..c9c706bf 100755
--- a/webinterface/templates/targets.html
+++ b/webinterface/templates/targets.html
@@ -86,7 +86,7 @@ <h1 class="title">Routing Targets</h1>
                 <form method="post">
                     <div class="field">
                         <p class="control">
-                            <input class="input" id="addnewname" type="text" required pattern="[-_A-Za-z0-9]+"
+                            <input class="input" id="addnewname" type="text" required pattern="[0-9a-zA-Z_\-]+"
                                 placeholder="Name of target" name="name" autofocus>
                         </p>
                     </div>
diff --git a/webinterface/templates/users.html b/webinterface/templates/users.html
index 1415d23b..9d5ccb15 100755
--- a/webinterface/templates/users.html
+++ b/webinterface/templates/users.html
@@ -88,7 +88,7 @@ <h1 class="title">Users</h1>
                 <form method="post">
                     <div class="field">
                         <p class="control">
-                            <input class="input" id="addnewname" type="text" required pattern="[-_A-Za-z0-9]+"
+                            <input class="input" id="addnewname" type="text" required pattern="[0-9a-zA-Z_\-]+"
                                 placeholder="Username" name="name" autofocus>
                         </p>
                     </div>