diff --git a/README.md b/README.md
index 73aeec4..a312f2d 100644
--- a/README.md
+++ b/README.md
@@ -85,3 +85,10 @@ License
 libgourou : LGPL v3 or later
 
 utils     : BSD
+
+
+
+Special thanks
+--------------
+
+  * _Jens_ for all test samples and utils testing
diff --git a/README_package.md b/README_package.md
index 3a7dde9..0b6fa9d 100644
--- a/README_package.md
+++ b/README_package.md
@@ -58,3 +58,11 @@ License
 libgourou : LGPL v3 or later
 
 utils     : BSD
+
+
+
+Special thanks
+--------------
+
+  * _Jens_ for all test samples and utils testing
+  
\ No newline at end of file