diff --git a/spec/app/language-mode-spec.coffee b/spec/app/language-mode-spec.coffee
index e7bdc7ea9..340f4865c 100644
--- a/spec/app/language-mode-spec.coffee
+++ b/spec/app/language-mode-spec.coffee
@@ -262,19 +262,19 @@ describe "LanguageMode", ->
         expect(buffer.lineForRow(0)).toBe "/*body {"
         expect(buffer.lineForRow(1)).toBe "  font-size: 1234px;*/"
         expect(buffer.lineForRow(2)).toBe "  width: 110%;"
-        expect(buffer.lineForRow(3)).toBe "}"
+        expect(buffer.lineForRow(3)).toBe "  font-weight: bold !important;"
 
         languageMode.toggleLineCommentsForBufferRows(2, 2)
         expect(buffer.lineForRow(0)).toBe "/*body {"
         expect(buffer.lineForRow(1)).toBe "  font-size: 1234px;*/"
         expect(buffer.lineForRow(2)).toBe "/*  width: 110%;*/"
-        expect(buffer.lineForRow(3)).toBe "}"
+        expect(buffer.lineForRow(3)).toBe "  font-weight: bold !important;"
 
         languageMode.toggleLineCommentsForBufferRows(0, 1)
         expect(buffer.lineForRow(0)).toBe "body {"
         expect(buffer.lineForRow(1)).toBe "  font-size: 1234px;"
         expect(buffer.lineForRow(2)).toBe "/*  width: 110%;*/"
-        expect(buffer.lineForRow(3)).toBe "}"
+        expect(buffer.lineForRow(3)).toBe "  font-weight: bold !important;"
 
       it "uncomments lines with leading whitespace", ->
         buffer.replaceLines(2, 2, "  /*width: 110%;*/")
diff --git a/spec/app/window-spec.coffee b/spec/app/window-spec.coffee
index 05e582d34..9cd9103b2 100644
--- a/spec/app/window-spec.coffee
+++ b/spec/app/window-spec.coffee
@@ -48,6 +48,16 @@ describe "Window", ->
       requireStylesheet('atom.css')
       expect($('head style').length).toBe lengthBefore + 1
 
+  describe ".disableStyleSheet(path)", ->
+    it "removes styling applied by given stylesheet path", ->
+      cssPath = require.resolve(fs.join("fixtures", "css.css"))
+
+      expect($(document.body).css('font-weight')).not.toBe("bold")
+      requireStylesheet(cssPath)
+      expect($(document.body).css('font-weight')).toBe("bold")
+      removeStylesheet(cssPath)
+      expect($(document.body).css('font-weight')).not.toBe("bold")
+
   describe "before the window is unloaded", ->
     it "saves the serialized state of the root view to the atom object so it can be rehydrated after reload", ->
       expect(atom.getRootViewStateForPath(window.rootView.project.getPath())).toBeUndefined()
diff --git a/spec/fixtures/css.css b/spec/fixtures/css.css
index 52b8f56c6..d5ae97e68 100644
--- a/spec/fixtures/css.css
+++ b/spec/fixtures/css.css
@@ -1,4 +1,5 @@
 body {
   font-size: 1234px;
   width: 110%;
+  font-weight: bold !important;
 }
diff --git a/src/app/window.coffee b/src/app/window.coffee
index 4b6d7047d..5eccba916 100644
--- a/src/app/window.coffee
+++ b/src/app/window.coffee
@@ -65,9 +65,14 @@ windowAdditions =
 
   requireStylesheet: (path) ->
     unless fullPath = require.resolve(path)
-      throw new Error("requireStylesheet could not find a file at path '#{path}'")
+      throw new Error("Could not find a file at path '#{path}'")
     window.applyStylesheet(fullPath, fs.read(fullPath))
 
+  removeStylesheet: (path) ->
+    unless fullPath = require.resolve(path)
+      throw new Error("Could not find a file at path '#{path}'")
+    $("head style[id='#{fullPath}']").remove()
+
   applyStylesheet: (id, text) ->
     unless $("head style[id='#{id}']").length
       $('head').append "<style id='#{id}'>#{text}</style>"