diff --git a/ppf.py b/ppf.py
index d5c72a4..c956c72 100755
--- a/ppf.py
+++ b/ppf.py
@@ -107,7 +107,7 @@ def proxyfind(sqlite = None):
 
 	sqlite.commit()
 
-def is_usable_ipv4(ip):
+def is_reserved_ipv4(ip):
 	if ( ip.startswith("10.") or ip.startswith("192.168.") or ip.startswith("127.") or ip.startswith("0.")) or \
 	(ip.startswith("172.") and (int(ip.split(".")[1]) >= 16 and int(ip.split(".")[1]) <= 31)): return True
 	return False
@@ -123,7 +123,7 @@ def proxyleech(sqlite, rows):
 		for p in sorted(re.findall(r'[0-9]+(?:\.[0-9]+){3}:[0-9]+', cleanhtml(content))):
 			if p in uniques: continue
 			try:
-				if not is_usable_ipv4(p.split(':')[0]): uniques.append(p)
+				if not is_reserved_ipv4(p.split(':')[0]): uniques.append(p)
 			except:
 				pass