diff --git a/app/letters/utils.py b/app/letters/utils.py
index 5e7730882..a5f67c11b 100644
--- a/app/letters/utils.py
+++ b/app/letters/utils.py
@@ -5,6 +5,7 @@ from flask import current_app
 
 from notifications_utils.s3 import s3upload
 
+from app.models import LETTER_TYPE
 from app.variables import Retention
 
 
@@ -79,4 +80,8 @@ def get_letter_pdf(notification):
 
 
 def is_precompiled_letter(template):
-    return template.hidden and template.name == current_app.config['PRECOMPILED_TEMPLATE_NAME']
+    return (
+        template.template_type == LETTER_TYPE and
+        template.hidden and
+        template.name == current_app.config['PRECOMPILED_TEMPLATE_NAME']
+    )
diff --git a/app/schemas.py b/app/schemas.py
index 9b4ae055c..f2282ac05 100644
--- a/app/schemas.py
+++ b/app/schemas.py
@@ -2,7 +2,6 @@ from datetime import (
     datetime,
     date,
     timedelta)
-from flask import current_app
 from flask_marshmallow.fields import fields
 from marshmallow import (
     post_load,
@@ -25,6 +24,7 @@ from notifications_utils.recipients import (
 
 from app import ma
 from app import models
+from app.letters.utils import is_precompiled_letter
 from app.models import ServicePermission
 from app.dao.permissions_dao import permission_dao
 from app.utils import get_template_instance
@@ -315,11 +315,7 @@ class BaseTemplateSchema(BaseSchema):
         return template.get_reply_to_text()
 
     def get_precompiled_letter(self, template):
-        return (
-            template.template_type == 'letter' and
-            template.hidden and
-            template.name == current_app.config['PRECOMPILED_TEMPLATE_NAME']
-        )
+        return is_precompiled_letter(template)
 
     class Meta:
         model = models.Template
diff --git a/app/template_statistics/rest.py b/app/template_statistics/rest.py
index 6dae8bec5..f00741a7b 100644
--- a/app/template_statistics/rest.py
+++ b/app/template_statistics/rest.py
@@ -14,6 +14,7 @@ from app.dao.templates_dao import (
     dao_get_template_by_id_and_service_id
 )
 
+from app.letters.utils import is_precompiled_letter
 from app.schemas import notification_with_template_schema
 from app.utils import cache_key_for_service_template_counter
 from app.errors import register_errors, InvalidRequest
@@ -48,11 +49,7 @@ def get_template_statistics_for_service_by_day(service_id):
             'template_id': str(data.template_id),
             'template_name': data.name,
             'template_type': data.template_type,
-            'precompiled_letter': (
-                data.template_type == 'letter' and
-                data.hidden and
-                data.name == current_app.config['PRECOMPILED_TEMPLATE_NAME']
-            )
+            'precompiled_letter': is_precompiled_letter(data)
         }
 
     return jsonify(data=[serialize(row) for row in stats])