diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 055562d..9e63cc5 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -47,3 +47,4 @@ jobs:
           cd ${{ github.workspace }}/pack/plugins/start/vim-table-mode
           echo "set packpath+=${{ github.workspace }}" > vimrc
           ${VIM} -u vimrc +TestifySuite +qall
+          cat testify_results.txt
diff --git a/t/autoload/tablemode/spreadsheet/api/manipulation_with_headers_test.vim b/t/autoload/tablemode/spreadsheet/api/manipulation_with_headers_test.vim
index 97fb1b9..e03b96d 100644
--- a/t/autoload/tablemode/spreadsheet/api/manipulation_with_headers_test.vim
+++ b/t/autoload/tablemode/spreadsheet/api/manipulation_with_headers_test.vim
@@ -7,7 +7,12 @@ function! s:setup()
   call utils#TestSetup(s:test_file)
 endfunction
 call testify#setup(function('s:setup'))
-call testify#teardown(function('utils#TestTeardown'))
+
+function! s:teardown()
+  let g:table_mode_header_fillchar = '-'
+  bw!
+endfunction
+call testify#teardown(function('s:teardown'))
 
 function! s:TestDeleteRow()
   call cursor(5, 7)
diff --git a/t/autoload/tablemode/spreadsheet/formula/add_test.vim b/t/autoload/tablemode/spreadsheet/formula/add_test.vim
index 25aa475..d6bab6d 100644
--- a/t/autoload/tablemode/spreadsheet/formula/add_test.vim
+++ b/t/autoload/tablemode/spreadsheet/formula/add_test.vim
@@ -15,7 +15,7 @@ function! s:TestAddFormula()
   call testify#assert#equals(cell_value, '125.0')
 
   call cursor(9, 15)
-  call testify#assert#equals(getline('.'), '/* tmf: $4,2=Sum(1:3) */')
+  call testify#assert#equals(getline('.'), ' tmf: $4,2=Sum(1:3) ')
 
   call cursor(8, 15)
   call tablemode#spreadsheet#formula#Add('Sum(1:-1)')
@@ -23,6 +23,6 @@ function! s:TestAddFormula()
   call testify#assert#equals(cell_value, '250.0')
 
   call cursor(9, 15)
-  call testify#assert#equals(getline('.'), '/* tmf: $4,2=Sum(1:3); $5,2=Sum(1:-1) */')
+  call testify#assert#equals(getline('.'), ' tmf: $4,2=Sum(1:3) ; $5,2=Sum(1:-1)')
 endfunction
 call testify#it('Should Add a formula to the table correctly', function('s:TestAddFormula'))
diff --git a/t/fixtures/formula/formula.txt b/t/fixtures/formula/formula.txt
index ab2df91..9e4ef35 100644
--- a/t/fixtures/formula/formula.txt
+++ b/t/fixtures/formula/formula.txt
@@ -1,7 +1,7 @@
-| Item     | Cost  |
-|----------+-------|
-| Bread    |    20 |
-| Tomatoes |     5 |
-| Pasta    |   100 |
-| Total    |     0 |
-/* tmf: $4,2=Sum(1:-1) */
+| Item     | Cost |
+|----------+------|
+| Bread    | 20   |
+| Tomatoes | 5    |
+| Pasta    | 100  |
+| Total    | 0    |
+ tmf: $4,2=Sum(1:-1)