diff --git a/compressor/filters/closure.py b/compressor/filters/closure.py
index 1246d48..a016fed 100644
--- a/compressor/filters/closure.py
+++ b/compressor/filters/closure.py
@@ -1,7 +1,8 @@
-import subprocess
+from subprocess import Popen, PIPE
 
 from compressor.conf import settings
 from compressor.filters import FilterBase, FilterError
+from compressor.utils import cmd_split
 
 
 class ClosureCompilerFilter(FilterBase):
@@ -12,15 +13,9 @@ class ClosureCompilerFilter(FilterBase):
         command = '%s %s' % (settings.CLOSURE_COMPILER_BINARY, arguments)
 
         try:
-            p = subprocess.Popen(command, shell=True, stdout=subprocess.PIPE, stdin=subprocess.PIPE, stderr=subprocess.PIPE)
-            p.stdin.write(self.content)
-            p.stdin.close()
+            p = Popen(cmd_split(command), stdout=PIPE, stdin=PIPE, stderr=PIPE)
+            filtered, err = p.communicate(self.content)
 
-            filtered = p.stdout.read()
-            p.stdout.close()
-
-            err = p.stderr.read()
-            p.stderr.close()
         except IOError, e:
             raise FilterError(e)
 
diff --git a/compressor/filters/yui.py b/compressor/filters/yui.py
index d2099bc..0109b81 100644
--- a/compressor/filters/yui.py
+++ b/compressor/filters/yui.py
@@ -1,7 +1,8 @@
-import subprocess
+from subprocess import Popen, PIPE
 
 from compressor.conf import settings
 from compressor.filters import FilterBase, FilterError
+from compressor.utils import cmd_split
 
 
 class YUICompressorFilter(FilterBase):
@@ -19,16 +20,8 @@ class YUICompressorFilter(FilterBase):
             command += ' --verbose'
 
         try:
-            p = subprocess.Popen(command, shell=True, stdout=subprocess.PIPE, stdin=subprocess.PIPE, stderr=subprocess.PIPE)
-            p.stdin.write(self.content)
-            p.stdin.close()
-
-            filtered = p.stdout.read()
-            p.stdout.close()
-
-            err = p.stderr.read()
-            p.stderr.close()
-
+            p = Popen(cmd_split(command), stdin=PIPE, stdout=PIPE, stderr=PIPE)
+            filtered, err = p.communicate(self.content)
         except IOError, e:
             raise FilterError(e)
 
@@ -42,11 +35,13 @@ class YUICompressorFilter(FilterBase):
 
         return filtered
 
+
 class YUICSSFilter(YUICompressorFilter):
     def __init__(self, *args, **kwargs):
         super(YUICSSFilter, self).__init__(*args, **kwargs)
         self.type = 'css'
 
+
 class YUIJSFilter(YUICompressorFilter):
     def __init__(self, *args, **kwargs):
         super(YUIJSFilter, self).__init__(*args, **kwargs)
diff --git a/compressor/utils.py b/compressor/utils.py
index eec02cb..f11545e 100644
--- a/compressor/utils.py
+++ b/compressor/utils.py
@@ -1,4 +1,6 @@
 import os
+from shlex import split as cmd_split
+
 from compressor.cache import cache
 from compressor.conf import settings
 from compressor.exceptions import FilterError