1 files changed, 1 insertions, 1 deletions
diff --git a/node.h b/node.h
index 3d6002f8c9..d8484127dd 100644
--- a/node.h
+++ b/node.h
@@ -144,7 +144,7 @@ typedef struct RNode {
     RNODE(n)->flags=((RNODE(n)->flags&~FL_UMASK)|(((t)<<FL_USHIFT)&FL_UMASK))
 
 #define NODE_LSHIFT (FL_USHIFT+8)
-#define NODE_LMASK  ((1<<(sizeof(NODE*)*CHAR_BIT-NODE_LSHIFT))-1)
+#define NODE_LMASK  (((long)1<<(sizeof(NODE*)*CHAR_BIT-NODE_LSHIFT))-1)
 #define nd_line(n) (((RNODE(n))->flags>>NODE_LSHIFT)&NODE_LMASK)
 #define nd_set_line(n,l) \
     RNODE(n)->flags=((RNODE(n)->flags&~(-1<<NODE_LSHIFT))|(((l)&NODE_LMASK)<<NODE_LSHIFT))