diff --git a/defs/coins/flashcoin.json b/defs/coins/flashcoin.json
index 0f032d107..c0d0a2ad3 100644
--- a/defs/coins/flashcoin.json
+++ b/defs/coins/flashcoin.json
@@ -24,7 +24,6 @@
 	},
 	"dust_limit": 10000,
 	"blocktime_minutes": 1,
-	"firmware": "stable",
 	"address_prefix": "flashcoin:",
 	"min_address_length": 27,
 	"max_address_length": 34,
diff --git a/defs/coins/myriad.json b/defs/coins/myriad.json
index 0cee3d94e..d5cc06c28 100644
--- a/defs/coins/myriad.json
+++ b/defs/coins/myriad.json
@@ -26,7 +26,6 @@
 	},
 	"dust_limit": 546,
 	"blocktime_minutes": 1,
-	"firmware": "stable",
 	"address_prefix": "myriadcoin:",
 	"min_address_length": 27,
 	"max_address_length": 34,