diff --git a/flaskr/templates/_formhelpers.html b/flaskr/templates/_formhelpers.jinja2
similarity index 100%
rename from flaskr/templates/_formhelpers.html
rename to flaskr/templates/_formhelpers.jinja2
diff --git a/flaskr/templates/writing.html b/flaskr/templates/writing.jinja2
similarity index 91%
rename from flaskr/templates/writing.html
rename to flaskr/templates/writing.jinja2
index 7b6db52..1cd7737 100644
--- a/flaskr/templates/writing.html
+++ b/flaskr/templates/writing.jinja2
@@ -2,6 +2,7 @@
 <html lang="en">
 
 <head>
+  <title>UnderCover</title>
   <link rel="stylesheet" type="text/css" href="
     {{ url_for('static', filename='styles_min.css') }}">
   <meta name="viewport" content="user-scalable=no;width=device-width">
@@ -28,7 +29,7 @@
     <h1><span class="logo left">Under</span><span class="logo right">Cover</span></h1>
   <a>
   <h2>The secret cover letter generator</h2>
-  {% from "_formhelpers.html" import render_field %}
+  {% from "_formhelpers.jinja2" import render_field %}
   <form method=post>
     <dl>
       {{ render_field(form.username) }}
@@ -54,7 +55,7 @@
     {% endif %}
     <input class=submit type=submit value="Generate PDF"
     {% if errors %}
-    onclick="var e = document.getElementById('errors'); e.parentNode.removeChild(e);"
+    onclick="const e = document.getElementById('errors'); e.parentNode.removeChild(e);"
     {% endif %}
     >
   </form>
diff --git a/latty.py b/latty.py
index 408bfc1..e9e6366 100644
--- a/latty.py
+++ b/latty.py
@@ -25,7 +25,7 @@ base_tex_text = open(proj_dir + "/writing_templates/base.tex", "r").read()
 
 
 @dataclass
-class CLData():
+class CLData:
     username: str
     company: str
     jobandpronoun: str
@@ -55,7 +55,7 @@ class CLData():
         f.write(base_tex_text)
         f.close()
 
-        output_arg="-jobname=outputs/" + unique_id + " " + unique_file
+        output_arg = "-jobname=outputs/" + unique_id + " " + unique_file
         com = "pdflatex -halt-on-error " + output_arg
         build_text = "[" + get_datetime() + "] Building for " + unique_id + " "
         result = subprocess.run(
@@ -94,7 +94,7 @@ class CLData():
             errors = list(map(str.strip, result.stdout.split("\n")))
             del errors[:13]
             del errors[-2:]
-            return (None, errors)
+            return None, errors
 
 
 def cleanup(unique):
diff --git a/start b/start
index dcda877..8f5cf27 100755
--- a/start
+++ b/start
@@ -2,14 +2,14 @@
 SCRIPT_DIR="$( cd "$( dirname "$0" )" && pwd )"
 
 if ! test -f "$SCRIPT_DIR/.undercover_init_successful"; then
-    if ! $SCRIPT_DIR/init; then
+    if ! "$SCRIPT_DIR/init"; then
         exit 1
     fi
 fi
 
 if ! pip3 -V | grep "$SCRIPT_DIR/.venv"; then
     echo "Entering virtual environment..."
-    source $SCRIPT_DIR/.venv/bin/activate
+    source "$SCRIPT_DIR/.venv/bin/activate"
 fi
 
 if [[ "$1" == "prod" ]]; then
diff --git a/writing.py b/writing.py
index 2b8c0d8..b1d6a1f 100644
--- a/writing.py
+++ b/writing.py
@@ -66,7 +66,7 @@ class CLForm(Form):
 def index_get():
     if flaskr.INDEX is None:
         flaskr.INDEX = render_template(
-            'writing.html',
+            'writing.jinja2',
             form=CLForm()
         )
     return flaskr.INDEX
@@ -115,7 +115,7 @@ def index_post():
         (resp, errors) = data.generate_pdf()
         if errors:
             resp = make_response(render_template(
-                'writing.html',
+                'writing.jinja2',
                 form=form,
                 errors=errors,
             ))
@@ -125,6 +125,6 @@ def index_post():
         return resp
 
     return render_template(
-        'writing.html',
+        'writing.jinja2',
         form=form,
     )
