diff --git a/ethereumj-core/src/test/resources/system.properties b/ethereumj-core/src/test/resources/system.properties
index 39c85975..643c569a 100644
--- a/ethereumj-core/src/test/resources/system.properties
+++ b/ethereumj-core/src/test/resources/system.properties
@@ -32,9 +32,6 @@ peer.active.port = 30303
 #peer.active.ip = 127.0.0.1
 #peer.active.port = 30303
 
-# Version of Ethereum sub-protocol
-protocol.version = 33
-
 # specify if the mechanism
 # to discover more and more
 # peers and check the already
diff --git a/ethereumj-studio/src/main/resources/system.properties b/ethereumj-studio/src/main/resources/system.properties
index bbeae9aa..68f54982 100644
--- a/ethereumj-studio/src/main/resources/system.properties
+++ b/ethereumj-studio/src/main/resources/system.properties
@@ -33,9 +33,6 @@ peer.active.port = 11111
 #peer.active.ip = 127.0.0.1
 #peer.active.port = 30303
 
-# Version of Ethereum sub-protocol
-protocol.version = 33
-
 # specify if the mechanism
 # to discover more and more
 # peers and check the already