diff --git a/requests/utils.py b/requests/utils.py
index 1bebbaaf..7b728c0d 100644
--- a/requests/utils.py
+++ b/requests/utils.py
@@ -423,7 +423,7 @@ def address_in_network(ip, net):
 def dotted_netmask(mask):
     """
     Converts mask from /xx format to xxx.xxx.xxx.xxx
-    Example: if mask is /24 function returns 255.255.255.0
+    Example: if mask is 24 function returns 255.255.255.0
     """
     bits = 0xffffffff ^ (1 << 32 - mask) - 1
     return socket.inet_ntoa(struct.pack('>I', bits))