diff --git a/bottles/wine.py b/bottles/wine.py
index ad4d181201..02afd26239 100644
--- a/bottles/wine.py
+++ b/bottles/wine.py
@@ -139,8 +139,8 @@ class T_Software(threading.Thread):
     def __init__(self, working_prefix_dir, file_src):
         threading.Thread.__init__(self)
         self.working_prefix_dir = working_prefix_dir
-        self.file_src = file_src
-        
+        self.file_src = file_src.replace(" ", "\\ ")
+
     def run(self):
         os.chdir(self.working_prefix_dir)
         subprocess.call("WINEPREFIX="+self.working_prefix_dir+" wine "+self.file_src, shell=True)