diff --git a/parse.y b/parse.y
index 17107d37ac..b1624d2213 100644
--- a/parse.y
+++ b/parse.y
@@ -11620,7 +11620,6 @@ rb_node_op_asgn_or_new(struct parser_params *p, NODE *nd_head, NODE *nd_value, c
     rb_node_op_asgn_or_t *n = NODE_NEWNODE(NODE_OP_ASGN_OR, rb_node_op_asgn_or_t, loc);
     n->nd_head = nd_head;
     n->nd_value = nd_value;
-    n->not_used = 0;
 
     return n;
 }
@@ -11631,7 +11630,6 @@ rb_node_op_asgn_and_new(struct parser_params *p, NODE *nd_head, NODE *nd_value,
     rb_node_op_asgn_and_t *n = NODE_NEWNODE(NODE_OP_ASGN_AND, rb_node_op_asgn_and_t, loc);
     n->nd_head = nd_head;
     n->nd_value = nd_value;
-    n->not_used = 0;
 
     return n;
 }
diff --git a/rubyparser.h b/rubyparser.h
index a61fdf6b84..e760d841a2 100644
--- a/rubyparser.h
+++ b/rubyparser.h
@@ -438,7 +438,6 @@ typedef struct RNode_OP_ASGN_AND {
 
     struct RNode *nd_head;
     struct RNode *nd_value;
-    VALUE not_used;
 } rb_node_op_asgn_and_t;
 
 typedef struct RNode_OP_ASGN_OR {
@@ -446,7 +445,6 @@ typedef struct RNode_OP_ASGN_OR {
 
     struct RNode *nd_head;
     struct RNode *nd_value;
-    VALUE not_used;
 } rb_node_op_asgn_or_t;
 
 typedef struct RNode_OP_CDECL {