1 files changed, 1 insertions, 1 deletions
diff --git a/node.h b/node.h
index 4eb3ded7a2..f8cf7de7b2 100644
--- a/node.h
+++ b/node.h
@@ -269,7 +269,7 @@ typedef struct RNode {
 
 #define nd_type(n) ((int) (((RNODE(n))->flags & NODE_TYPEMASK)>>NODE_TYPESHIFT))
 #define nd_set_type(n,t) \
-    RNODE(n)->flags=((RNODE(n)->flags&~NODE_TYPEMASK)|(((t)<<NODE_TYPESHIFT)&NODE_TYPEMASK))
+    RNODE(n)->flags=((RNODE(n)->flags&~NODE_TYPEMASK)|((((unsigned long)t)<<NODE_TYPESHIFT)&NODE_TYPEMASK))
 
 #define NODE_LSHIFT (NODE_TYPESHIFT+7)
 #define NODE_LMASK  (((SIGNED_VALUE)1<<(sizeof(VALUE)*CHAR_BIT-NODE_LSHIFT))-1)