diff --git a/LCX_ABT.sol b/LCX_ABT.sol
index 601d104..538c1e1 100644
--- a/LCX_ABT.sol
+++ b/LCX_ABT.sol
@@ -3,6 +3,7 @@ pragma solidity ^0.4.19;
 /*
     Copyright 2018, Vicent Nos, Enrique Santos & Mireia Puig
     
+    License:
     https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode
 
  */
diff --git a/LCX_CIF.sol b/LCX_CIF.sol
index 64df2a7..f558b00 100644
--- a/LCX_CIF.sol
+++ b/LCX_CIF.sol
@@ -3,9 +3,9 @@ pragma solidity ^0.4.19;
 /*
     Copyright 2018, Vicent Nos, Enrique Santos & Mireia Puig
 
+    License:
     https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode
 
-
  */
 
 
diff --git a/LCX_CYC.sol b/LCX_CYC.sol
index b01bbbd..a010ac9 100644
--- a/LCX_CYC.sol
+++ b/LCX_CYC.sol
@@ -3,6 +3,7 @@ pragma solidity 0.4.24;
 /*
     Copyright 2018, Vicent Nos, Enrique Santos & Mireia Puig
 
+    License:
     https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode
 
  */
diff --git a/LCX_Certificates_X509.sol b/LCX_Certificates_X509.sol
index 10fc05a..6c54a5c 100644
--- a/LCX_Certificates_X509.sol
+++ b/LCX_Certificates_X509.sol
@@ -1,10 +1,9 @@
 pragma solidity ^0.4.20;
 
-
-
 /*
     Copyright 2018, Vicent Nos & Enrique Santos
-
+    
+    License:
     https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode
     
 
diff --git a/LCX_ISC.sol b/LCX_ISC.sol
index a54729f..aa30f80 100644
--- a/LCX_ISC.sol
+++ b/LCX_ISC.sol
@@ -3,6 +3,7 @@ pragma solidity ^0.4.24;
 /*
     Copyright 2018, Vicent Nos, Enrique Santos & Mireia Puig
 
+    License:
     https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode
 
  */
diff --git a/tests/contracts/LCX_ABT.sol b/tests/contracts/LCX_ABT.sol
index 2f1fdf1..af2699f 100644
--- a/tests/contracts/LCX_ABT.sol
+++ b/tests/contracts/LCX_ABT.sol
@@ -3,6 +3,7 @@ pragma solidity ^0.4.19;
 /*
     Copyright 2018, Vicent Nos, Enrique Santos & Mireia Puig
 
+    License:
     https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode
 
  */
diff --git a/tests/contracts/LCX_CIF.sol b/tests/contracts/LCX_CIF.sol
index d799e28..6867bdd 100644
--- a/tests/contracts/LCX_CIF.sol
+++ b/tests/contracts/LCX_CIF.sol
@@ -3,6 +3,7 @@ pragma solidity ^0.4.19;
 /*
     Copyright 2018, Vicent Nos, Enrique Santos & Mireia Puig
 
+    License:
     https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode
 
  */
diff --git a/tests/contracts/LCX_CYC.sol b/tests/contracts/LCX_CYC.sol
index 4986f76..2fb8bc1 100644
--- a/tests/contracts/LCX_CYC.sol
+++ b/tests/contracts/LCX_CYC.sol
@@ -3,6 +3,7 @@ pragma solidity 0.4.24;
 /*
     Copyright 2018, Vicent Nos, Enrique Santos & Mireia Puig
 
+    License:
     https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode
 
  */
diff --git a/tests/contracts/LCX_ISC.sol b/tests/contracts/LCX_ISC.sol
index 08e7575..1b67e52 100644
--- a/tests/contracts/LCX_ISC.sol
+++ b/tests/contracts/LCX_ISC.sol
@@ -2,7 +2,8 @@ pragma solidity ^0.4.24;
 
 /*
     Copyright 2018, Vicent Nos, Enrique Santos & Mireia Puig
-
+    
+    License:
     https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode
 
  */
diff --git a/tests/contracts/LCX_ISC2.sol b/tests/contracts/LCX_ISC2.sol
index 36f4a1a..c76b28c 100644
--- a/tests/contracts/LCX_ISC2.sol
+++ b/tests/contracts/LCX_ISC2.sol
@@ -2,7 +2,8 @@ pragma solidity ^0.4.19;
 
 /*
     Copyright 2018, Vicent Nos, Enrique Santos & Mireia Puig
-
+    
+    License:
     https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode
 
  */