diff --git a/doc-src/SASS_CHANGELOG.md b/doc-src/SASS_CHANGELOG.md
index 2a7fba0b13..bc500aa567 100644
--- a/doc-src/SASS_CHANGELOG.md
+++ b/doc-src/SASS_CHANGELOG.md
@@ -10,6 +10,8 @@
 * When printing a Sass error into a CSS comment, escape `*/` so the comment
   doesn't end prematurely.
 
+* Preserve the `!` in `/*! ... */`-style comments.
+
 ## 3.2.9
 
 * Fix a bug where `@extend`s would occasionally cause a selector to be generated
diff --git a/lib/sass/engine.rb b/lib/sass/engine.rb
index 7695d42795..5e8740713c 100644
--- a/lib/sass/engine.rb
+++ b/lib/sass/engine.rb
@@ -637,7 +637,6 @@ def parse_comment(line)
           value = [line.text]
         else
           value = self.class.parse_interp(line.text, line.index, line.offset, :filename => @filename)
-          value[0].slice!(2) if loud # get rid of the "!"
         end
         value = with_extracted_values(value) do |str|
           str = str.gsub(/^#{line.comment_tab_str}/m, '')[2..-1] # get rid of // or /*
diff --git a/lib/sass/scss/parser.rb b/lib/sass/scss/parser.rb
index 5bf39d6a96..5844a142a5 100644
--- a/lib/sass/scss/parser.rb
+++ b/lib/sass/scss/parser.rb
@@ -120,7 +120,6 @@ def process_comment(text, node)
           value = [text.sub(/^\s*\/\//, '/*').gsub(/^\s*\/\//, ' *') + ' */']
         else
           value = Sass::Engine.parse_interp(text, line, @scanner.pos - text.size, :filename => @filename)
-          value[0].slice!(2) if loud # get rid of the "!"
           value.unshift(@scanner.
             string[0...@scanner.pos].
             reverse[/.*?\*\/(.*?)($|\Z)/, 1].
diff --git a/lib/sass/tree/visitors/convert.rb b/lib/sass/tree/visitors/convert.rb
index 62ae782345..56c290f78c 100644
--- a/lib/sass/tree/visitors/convert.rb
+++ b/lib/sass/tree/visitors/convert.rb
@@ -89,7 +89,6 @@ def visit_comment(node)
       end.gsub(/^/, spaces) + "\n"
       content
     end
-    content.sub!(%r{^\s*(/\*)}, '/*!') if node.type == :loud #'
     content
   end
 
diff --git a/test/sass/engine_test.rb b/test/sass/engine_test.rb
index fa2155c28d..a325167a4a 100755
--- a/test/sass/engine_test.rb
+++ b/test/sass/engine_test.rb
@@ -1804,7 +1804,7 @@ def test_loud_comment_with_separate_line_close
 
   def test_loud_comment_in_compressed_mode
     assert_equal <<CSS, render(<<SASS, :style => :compressed)
-foo{color:blue;/* foo
+foo{color:blue;/*! foo
  * bar
  */}
 CSS
@@ -1818,7 +1818,8 @@ def test_loud_comment_in_compressed_mode
 
   def test_loud_comment_is_evaluated
     assert_equal <<CSS, render(<<SASS)
-/* Hue: 327.21649deg */
+/*!
+ * Hue: 327.21649deg */
 CSS
 /*!
   Hue: \#{hue(#f836a0)}
@@ -2486,15 +2487,15 @@ def test_tricky_mixin_loop_exception
 
   def test_interpolated_comment_in_mixin
     assert_equal <<CSS, render(<<SASS)
-/* color: red */
+/*! color: red */
 .foo {
   color: red; }
 
-/* color: blue */
+/*! color: blue */
 .foo {
   color: blue; }
 
-/* color: green */
+/*! color: green */
 .foo {
   color: green; }
 CSS
@@ -2789,7 +2790,7 @@ def test_loud_comment_interpolations_can_be_escaped
 /* \\\#{foo}
 SASS
     assert_equal <<CSS, render(<<SASS)
-/* \#{foo} */
+/*! \#{foo} */
 CSS
 /*! \\\#{foo}
 SASS
diff --git a/test/sass/scss/scss_test.rb b/test/sass/scss/scss_test.rb
index 45d94368cd..4ef820376d 100755
--- a/test/sass/scss/scss_test.rb
+++ b/test/sass/scss/scss_test.rb
@@ -1711,6 +1711,14 @@ def test_no_lonely_else
 
   # Regression
 
+  def test_loud_comment_in_compressed_mode
+    assert_equal(<<CSS, render(<<SCSS))
+/*! foo */
+CSS
+/*! foo */
+SCSS
+  end
+
   def test_parsing_decimals_followed_by_comments_doesnt_take_forever
     assert_equal(<<CSS, render(<<SCSS))
 .foo {