1 files changed, 2 insertions, 0 deletions

diff --git a/src/boolean.h b/src/boolean.h
index 3035b32..270e578 100644
--- a/src/boolean.h
+++ b/src/boolean.h
@@ -24,4 +24,6 @@ namespace Gats
         };
 };
 
+Bu::Formatter &operator<<( Bu::Formatter &f, const Gats::Boolean &b );
+
 #endif