diff --git a/dev-config.json b/dev-config.json
index 890421c..db85791 100644
--- a/dev-config.json
+++ b/dev-config.json
@@ -3,22 +3,22 @@
         {
             "name": "DYMO_LabelWriter450",
             "aliases": ["dymo", "label"],
-            "ipp_url": "ipp://printmaster.local:443/printers/DYMO_LabelWriter450"
+            "ipp_url": "ipp://printmaster.local:631/printers/DYMO_LabelWriter450"
         },
         {
             "name": "Zebra_GK420T",
             "aliases": ["zebra", "biglabel", "4x6"],
-            "ipp_url": "ipp://printmaster.local:443/printers/Zebra_GK420T"
+            "ipp_url": "ipp://printmaster.local:631/printers/Zebra_GK420T"
         },
         {
             "name": "Brother_MFC8380DN",
             "aliases": ["brother", "franciszek", "a4"],
-            "ipp_url": "ipp://printmaster.local:443/printers/Brother_MFC8380DN"
+            "ipp_url": "ipp://printmaster.local:631/printers/Brother_MFC8380DN"
         },
         {
             "name": "OKI_C332",
             "aliases": ["oki", "okił", "a4_color"],
-            "ipp_url": "ipp://printmaster.local:443/printers/OKI_C332"
+            "ipp_url": "ipp://printmaster.local:631/printers/OKI_C332"
         }
     ]
 }