diff --git a/lesscpy/plib/block.py b/lesscpy/plib/block.py
index 65adc39..9966bb9 100644
--- a/lesscpy/plib/block.py
+++ b/lesscpy/plib/block.py
@@ -74,9 +74,11 @@ class Block(Node):
                 inner = ''.join([p.fmt(fills) for p in self.inner])
                 inner = inner.replace(fills['nl'], 
                                       fills['nl'] + fills['tab']).rstrip(fills['tab'])
+                if not fills['nl']:
+                    inner = inner.strip()
                 fills.update({
                     'identifier': name,
-                    'proplist': fills['tab'] + inner,
+                    'proplist': fills['tab'] + inner
                 })
                 out.append(f % fills)
             else:
diff --git a/lesscpy/test/css/issues/issue4.min.css b/lesscpy/test/css/issues/issue4.min.css
index 2d8ba71..41a3e2d 100644
--- a/lesscpy/test/css/issues/issue4.min.css
+++ b/lesscpy/test/css/issues/issue4.min.css
@@ -1,2 +1 @@
-@media print{.mixin{color:red;}
-}
\ No newline at end of file
+@media print{.mixin{color:red;}}
diff --git a/lesscpy/test/css/keyframes.min.css b/lesscpy/test/css/keyframes.min.css
index e029dd3..f5529d2 100644
--- a/lesscpy/test/css/keyframes.min.css
+++ b/lesscpy/test/css/keyframes.min.css
@@ -1,9 +1,6 @@
 @-webkit-keyframes progress-bar-stripes{from{background-position:0 0;}
-to{background-position:40px 0;}
-}
+to{background-position:40px 0;}}
 @-moz-keyframes progress-bar-stripes{from{background-position:0 0;}
-to{background-position:40px 0;}
-}
+to{background-position:40px 0;}}
 @keyframes progress-bar-stripes{from{background-position:0 0;}
-to{background-position:40px 0;}
-}
+to{background-position:40px 0;}}
diff --git a/lesscpy/test/css/media.min.css b/lesscpy/test/css/media.min.css
index f7c9a83..3b68ecb 100644
--- a/lesscpy/test/css/media.min.css
+++ b/lesscpy/test/css/media.min.css
@@ -1,11 +1,7 @@
 @media screen,projection{html{background:#fffef0;color:#330000;}
-body{max-width:35em;margin:0 auto;}
-}
+body{max-width:35em;margin:0 auto;}}
 @media print{.class{color:blue;}
 .class .sub{width:42;}
-.top,header>h1{color:#444444;}
-}
-@media screen{body{max-width:480;}
-}
-@media all and (orientation:portrait){aside{float:none;}
-}
+.top,header>h1{color:#444444;}}
+@media screen{body{max-width:480;}}
+@media all and (orientation:portrait){aside{float:none;}}
diff --git a/lesscpy/test/css/ws.min.css b/lesscpy/test/css/ws.min.css
index 5087239..130df94 100644
--- a/lesscpy/test/css/ws.min.css
+++ b/lesscpy/test/css/ws.min.css
@@ -8,5 +8,4 @@
 .newlines{background:the,great,wall;border:2px solid black;}
 .no_final_semi{color:white;}
 .no_final_semi1{color:yellow;color:white;}
-@media all{html{padding:src('no semi in media block');}
-}
+@media all{html{padding:src('no semi in media block');}}