diff -rup a/prnt/drv/hpcups.drv.in b/prnt/drv/hpcups.drv.in
--- a/prnt/drv/hpcups.drv.in	2019-01-24 12:07:57.000000000 +0100
+++ b/prnt/drv/hpcups.drv.in	2019-01-31 18:41:20.950786720 +0100
@@ -11096,6 +11096,8 @@ CustomMedia "B5/B5 176x250mm" 498.96 708
       Attribute "NickName" "" "HP Officejet Pro 8500 a909a, hpcups $Version"
       Attribute "ShortNickName" "" "HP OJ Pro 8500 a909a hpijs"
       Attribute "1284DeviceID" "" "MFG:HP;MDL:officejet pro 8500 a909a;DES:officejet pro 8500 a909a;"
+      // This device lies about its supplies capacity.
+      Attribute "cupsSNMPQuirks" "" "capacity"
       PCFileName "hp-officejet_pro_8500_a909a.ppd"
       Attribute "Product" "" "(HP Officejet Pro 8500 All-in-one Printer - a909a)"
     }
@@ -11104,6 +11106,8 @@ CustomMedia "B5/B5 176x250mm" 498.96 708
       Attribute "NickName" "" "HP Officejet Pro 8500 a909g, hpcups $Version"
       Attribute "ShortNickName" "" "HP OJ Pro 8500 a909g hpijs"
       Attribute "1284DeviceID" "" "MFG:HP;MDL:officejet pro 8500 a909g;DES:officejet pro 8500 a909g;"
+      // This device lies about its supplies capacity.
+      Attribute "cupsSNMPQuirks" "" "capacity"
       PCFileName "hp-officejet_pro_8500_a909g.ppd"
       Attribute "Product" "" "(HP Officejet Pro 8500 Wireless All-in-one Printer - a909g)"
     }