diff --git a/autoload/tablemode/utils.vim b/autoload/tablemode/utils.vim
index af9495d..e275c7d 100644
--- a/autoload/tablemode/utils.vim
+++ b/autoload/tablemode/utils.vim
@@ -52,9 +52,7 @@ function! tablemode#utils#strlen(text)
   return strlen(substitute(a:text, '.', 'x', 'g'))
 endfunction
 
-" Return the number of bytes in a string after expanding tabs to spaces.  {{{2
-" This expansion is done based on the current value of 'tabstop'
-function! tablemode#utils#StrDisplayWidth(string)
+function! tablemode#utils#StrDisplayWidth(string) "{{{2
   if exists('*strdisplaywidth')
     return strdisplaywidth(a:string)
   else
@@ -77,4 +75,3 @@ function! tablemode#utils#StrDisplayWidth(string)
     return rv
   endif
 endfunction
-
diff --git a/t/utils.vim b/t/utils.vim
index 676cf4c..57b9ea3 100644
--- a/t/utils.vim
+++ b/t/utils.vim
@@ -3,31 +3,45 @@ source t/config/options.vim
 
 call vspec#hint({'scope': 'tablemode#utils#scope()', 'sid': 'tablemode#utils#sid()'})
 
-describe 'line'
-  it 'should return the current line number'
-    Expect tablemode#utils#line('.') == line('.')
+describe 'utils'
+  describe 'line'
+    it 'should return the current line number'
+      Expect tablemode#utils#line('.') == line('.')
+    end
+
+    it 'should return the line number itself if it is a number'
+      Expect tablemode#utils#line(1) == 1
+    end
   end
 
-  it 'should return the line number itself if it is a number'
-    Expect tablemode#utils#line(1) == 1
-  end
-end
-
-describe 'strip'
-  it 'should strip all initial or trailing whitespace from a string'
-    let string = ' This is awesome  '
-    Expect tablemode#utils#strip(string) == 'This is awesome'
-  end
-end
-
-describe 'strlen'
-  it 'should return the length of a string correctly'
-    let string = 'this is a test'
-    Expect tablemode#utils#strlen(string) == 14
-  end
-
-  it 'should return the length of a unicode string correctly'
-    let string = '測試 is good.'
-    Expect tablemode#utils#strlen(string) == 11
+  describe 'strip'
+    it 'should strip all initial or trailing whitespace from a string'
+      let string = ' This is awesome  '
+      Expect tablemode#utils#strip(string) == 'This is awesome'
+    end
+  end
+
+  describe 'strlen'
+    it 'should return the length of a string correctly'
+      let string = 'this is a test'
+      Expect tablemode#utils#strlen(string) == 14
+    end
+
+    it 'should return the length of a unicode string correctly'
+      let string = '測試 is good.'
+      Expect tablemode#utils#strlen(string) == 11
+    end
+  end
+
+  describe 'strdisplaywidth'
+    it 'should return the display width of a string correctly'
+      let string = 'this is a test'
+      Expect tablemode#utils#StrDisplayWidth(string) == 14
+    end
+
+    it 'should return the display width of a unicode string correctly'
+      let string = '測試 is good.'
+      Expect tablemode#utils#StrDisplayWidth(string) == 13
+    end
   end
 end