diff --git a/crypto.cpp b/crypto.cpp
index 71fc41292..9d552101e 100644
--- a/crypto.cpp
+++ b/crypto.cpp
@@ -3,7 +3,7 @@
 
 	cpp-ethereum is free software: you can redistribute it and/or modify
 	it under the terms of the GNU General Public License as published by
-	the Free Software Foundation, either version 3 of the License, or
+	the Free Software Foundation, either version 2 of the License, or
 	(at your option) any later version.
 
 	Foobar is distributed in the hope that it will be useful,
diff --git a/dagger.cpp b/dagger.cpp
index 97e575a68..389e0c514 100644
--- a/dagger.cpp
+++ b/dagger.cpp
@@ -3,7 +3,7 @@
 
 	cpp-ethereum is free software: you can redistribute it and/or modify
 	it under the terms of the GNU General Public License as published by
-	the Free Software Foundation, either version 3 of the License, or
+	the Free Software Foundation, either version 2 of the License, or
 	(at your option) any later version.
 
 	Foobar is distributed in the hope that it will be useful,
diff --git a/trie.cpp b/trie.cpp
index 8fe596a7f..ba998046b 100644
--- a/trie.cpp
+++ b/trie.cpp
@@ -3,7 +3,7 @@
 
 	cpp-ethereum is free software: you can redistribute it and/or modify
 	it under the terms of the GNU General Public License as published by
-	the Free Software Foundation, either version 3 of the License, or
+	the Free Software Foundation, either version 2 of the License, or
 	(at your option) any later version.
 
 	Foobar is distributed in the hope that it will be useful,