diff --git a/putty.h b/putty.h
index 1029de3f..151ab9e0 100644
--- a/putty.h
+++ b/putty.h
@@ -111,7 +111,7 @@ typedef struct {
 
 GLOBAL Backend *back;
 
-GLOBAL struct backend_list {
+extern struct backend_list {
     int protocol;
     char *name;
     Backend *backend;