diff --git a/include/why2.h b/include/why2.h
index 1f40365..ef3e930 100644
--- a/include/why2.h
+++ b/include/why2.h
@@ -14,6 +14,7 @@
 #include <why2/misc.h>
 
 //LOGGER
+#include <why2/logger/flags.h>
 #include <why2/logger/logger.h>
 
 #endif
\ No newline at end of file