1 files changed, 1 insertions, 1 deletions
diff --git a/env.h b/env.h
index f9786d1ae4..cf79143429 100644
--- a/env.h
+++ b/env.h
@@ -19,7 +19,7 @@ extern struct ENVIRON {
     struct ENVIRON *prev;
 } *the_env;
 
-struct SCOPE {
+extern struct SCOPE {
     struct RBasic super;
     ID *local_tbl;
     VALUE *local_vars;