diff --git a/app/models/spreadsheet.py b/app/models/spreadsheet.py
index 7b66a7b0f..59ca2bdd7 100644
--- a/app/models/spreadsheet.py
+++ b/app/models/spreadsheet.py
@@ -3,6 +3,7 @@ from io import StringIO
 from os import path
 
 import pyexcel
+import pyexcel_xlsx
 
 
 class Spreadsheet():
@@ -72,6 +73,15 @@ class Spreadsheet():
             file_content = StringIO(
                 Spreadsheet.normalise_newlines(file_content))
 
+        if extension == 'xlsm':
+            file_data = pyexcel_xlsx.get_data(file_content)
+            instance = cls.from_rows(
+                # Get the first sheet from the workbook
+                list(file_data.values())[0],
+                filename,
+            )
+            return instance
+
         instance = cls.from_rows(
             pyexcel.iget_array(
                 file_type=extension,
diff --git a/tests/app/main/views/test_send.py b/tests/app/main/views/test_send.py
index 7d192f2a0..3dda1a696 100644
--- a/tests/app/main/views/test_send.py
+++ b/tests/app/main/views/test_send.py
@@ -300,8 +300,8 @@ def test_set_sender_redirects_if_one_sms_sender(
 
 
 def test_that_test_files_exist():
-    assert len(test_spreadsheet_files) == 7
-    assert len(test_non_spreadsheet_files) == 7
+    assert len(test_spreadsheet_files) == 8
+    assert len(test_non_spreadsheet_files) == 6
 
 
 def test_should_not_allow_files_to_be_uploaded_without_the_correct_permission(
diff --git a/tests/non_spreadsheet_files/excel 2007 with macro support.xlsm b/tests/spreadsheet_files/excel 2007 with macro support.xlsm
similarity index 100%
rename from tests/non_spreadsheet_files/excel 2007 with macro support.xlsm
rename to tests/spreadsheet_files/excel 2007 with macro support.xlsm