diff --git a/doxy_ethread.py b/doxy_ethread.py
index e25668a..9a3d24e 100644
--- a/doxy_ethread.py
+++ b/doxy_ethread.py
@@ -15,7 +15,7 @@ def create(target, module_name):
 	    "doc"
 	    ])
 	my_module.add_file_patterns([
-	    '*.h',
+	    '*.hpp',
 	    '*.md',
 	    ])
 	
diff --git a/ethread/tools.cpp b/ethread/tools.cpp
index 5e55f5e..b585a26 100644
--- a/ethread/tools.cpp
+++ b/ethread/tools.cpp
@@ -6,7 +6,7 @@
  * @license APACHE v2.0 (see license file)
  */
 
-#include <ethread/tools.h>
+#include <ethread/tools.hpp>
 #include <mutex>
 #include <map>
 
diff --git a/ethread/tools.h b/ethread/tools.hpp
similarity index 100%
rename from ethread/tools.h
rename to ethread/tools.hpp
diff --git a/lutin_ethread.py b/lutin_ethread.py
index d3f4064..ede5037 100644
--- a/lutin_ethread.py
+++ b/lutin_ethread.py
@@ -33,7 +33,7 @@ def create(target, module_name):
 		])
 	
 	my_module.add_header_file([
-		'ethread/tools.h',
+		'ethread/tools.hpp',
 		])
 	
 	# build in C++ mode