diff --git a/test/expected/general.css b/test/expected/general.css
index ef2ca03..d07ec13 100644
--- a/test/expected/general.css
+++ b/test/expected/general.css
@@ -4,7 +4,7 @@
   background: url('_../images/bar.png?12345');
   background: url(_../images/foo.png) ;
   background: url( _../images/bar.png  );
-  background: url(  
+  background: url(
     _../images/bar.png
        );
   background: transparent url( _../images/bar.png  );
@@ -16,7 +16,7 @@
   background: url( _more-images/bar.jpg?12345 );
   background: url( '_more-images/bar.jpg' );
   background: url(
-    _more-images/bar.jpg   
+    _more-images/bar.jpg
   );
   background  : url(_images/thing.jpg)  ;
 }
diff --git a/test/expected/msie-behavior.css b/test/expected/msie-behavior.css
index 285fa67..14bdf80 100644
--- a/test/expected/msie-behavior.css
+++ b/test/expected/msie-behavior.css
@@ -1,11 +1,11 @@
 /* URLs in IE's 'behavior' property are skipped, by default */
 *, *:before, *:after {
   box-sizing: border-box;
-  
+
   /* without hack */
   behavior: url(_scripts/boxsizing.htc);
   behavior  : url(  _scripts/boxsizing.htc  );
-  
+
   /* with IE<8 hack */
   *behavior: url(_scripts/boxsizing.htc);
 }
diff --git a/test/fixtures/general.css b/test/fixtures/general.css
index d5ece15..aabea99 100644
--- a/test/fixtures/general.css
+++ b/test/fixtures/general.css
@@ -4,7 +4,7 @@
   background: url('../images/bar.png?12345');
   background: url(../images/foo.png) ;
   background: url( ../images/bar.png  );
-  background: url(  
+  background: url(
     ../images/bar.png
        );
   background: transparent url( ../images/bar.png  );
@@ -16,7 +16,7 @@
   background: url( more-images/bar.jpg?12345 );
   background: url( 'more-images/bar.jpg' );
   background: url(
-    more-images/bar.jpg   
+    more-images/bar.jpg
   );
   background  : url(images/thing.jpg)  ;
 }
diff --git a/test/fixtures/msie-behavior.css b/test/fixtures/msie-behavior.css
index 1ff77d8..6b25e7c 100644
--- a/test/fixtures/msie-behavior.css
+++ b/test/fixtures/msie-behavior.css
@@ -1,11 +1,11 @@
 /* URLs in IE's 'behavior' property are skipped, by default */
 *, *:before, *:after {
   box-sizing: border-box;
-  
+
   /* without hack */
   behavior: url(scripts/boxsizing.htc);
   behavior  : url(  scripts/boxsizing.htc  );
-  
+
   /* with IE<8 hack */
   *behavior: url(scripts/boxsizing.htc);
 }