diff --git a/src/do.c b/src/do.c
index d97b3dac1..60fcd5bcb 100644
--- a/src/do.c
+++ b/src/do.c
@@ -170,7 +170,7 @@ const char *verb;
                        might have been thrown by a giant or launched by
                        a rolling boulder trap triggered by a monster or
                        dropped by a scroll of earth read by a monster */
-                    if (context.mon_moving) {
+                    if (g.context.mon_moving) {
                         /* normally we'd use ohitmon() but it can call
                            drop_throw() which calls flooreffects() */
                         damage = dmgval(obj, mtmp);