diff --git a/doc/dev/dolibarr-doxygen b/doc/dev/dolibarr-doxygen
index cd94df848f7..73964838a68 100755
--- a/doc/dev/dolibarr-doxygen
+++ b/doc/dev/dolibarr-doxygen
@@ -32,7 +32,7 @@ SUBGROUPING            = YES
 # Build related configuration options
 #---------------------------------------------------------------------------
 EXTRACT_ALL            = NO
-EXTRACT_PRIVATE        = NO
+EXTRACT_PRIVATE        = YES
 EXTRACT_STATIC         = NO
 EXTRACT_LOCAL_CLASSES  = YES
 EXTRACT_LOCAL_METHODS  = NO