diff --git a/lib/pure/net.nim b/lib/pure/net.nim
index 3ef41aa3c4..cd509463a2 100644
--- a/lib/pure/net.nim
+++ b/lib/pure/net.nim
@@ -1827,6 +1827,10 @@ proc `$`*(address: IpAddress): string =
                 result.add(chr(uint16(ord('a'))+val-0xA))
               afterLeadingZeros = true
             mask = mask shr 4
+
+          if not afterLeadingZeros:
+            result.add '0'
+
           printedLastGroup = true
 
 proc dial*(address: string, port: Port,