1 files changed, 2 insertions, 0 deletions

diff --git a/env.h b/env.h
index 68346172db..c6b079d301 100644
--- a/env.h
+++ b/env.h
@@ -85,4 +85,6 @@ struct BLOCK {
 #define BLOCK_LAMBDA  2
 #define BLOCK_FROM_METHOD  4
 
+RUBY_EXTERN VALUE ruby_wrapper;
+
 #endif /* ENV_H */