diff --git a/segenman b/segenman
index 3d234a7..45c53dd 100755
--- a/segenman
+++ b/segenman
@@ -152,11 +152,33 @@ date = datetime.datetime.now().strftime("%d %b %Y")
 def prettyprint(f,trim):
     return " ".join(f[:-len(trim)].split("_"))
 
+def get_os_version():
+    os_version = ""
+    pkg_name = "selinux-policy"
+    try:
+        import commands
+        rc, output = commands.getstatusoutput("rpm -q '%s'" % pkg_name)
+        if rc == 0:
+            os_version = output.split(".")[-2]
+    except:
+        os_version = ""
+
+    if os_version[0:2] == "fc":
+        os_version = "Fedora"+os_version[2:]
+    elif os_version[0:2] == "el":
+        os_version = "RHEL"+os_version[2:]
+    else:
+        os_version = ""
+		
+    return os_version
+
+
+os_version = get_os_version()
+
 class ManPage:
-    def __init__(self, domainname, path, os_version):
+    def __init__(self, domainname, path):
         self.domainname = domainname
 	self.short_name = domainname
-        self.os_version = os_version
         self.type = self.domainname + "_t"
         self.fd = open("%s/%s_selinux.8" % (path, domainname), 'w')
         if domainname in roles:
@@ -898,13 +920,10 @@ if __name__ == '__main__':
 	parser = argparse.ArgumentParser(description='Generate SELinux man pages')
 
 	parser.add_argument("-p", "--path", dest="path", default="/tmp", help="Path for SELinux man pages")
-	parser.add_argument("-v", "--version", dest="os_version", default="Fedora18",help="Version of OS")
 	parser.add_argument("-l", "--list", dest="test_domains", default="", nargs="+", help="List of domains")
 
 	try:
 		args = parser.parse_args()
-
-		os_version = args.os_version
 		path = args.path
 
 		if len(args.test_domains) == 0:
@@ -922,4 +941,4 @@ if __name__ == '__main__':
 
 	for domain in test_domains:
 		print domain
-		ManPage(domain, path, os_version)
+		ManPage(domain, path)