diff --git a/src/activity_item_handling.cpp b/src/activity_item_handling.cpp
index 8ef4f9d828553..6955a15c1e510 100644
--- a/src/activity_item_handling.cpp
+++ b/src/activity_item_handling.cpp
@@ -2142,8 +2142,8 @@ static bool mine_activity( player &p, const tripoint &src_loc )
         // We're breaking up some flat surface like pavement, which is much easier
         moves /= 2;
     }
-    p.assign_activity( powered ? ACT_JACKHAMMER : ACT_PICKAXE, moves, -1,
-                       p.get_item_position( chosen_item ) );
+    p.assign_activity( powered ? ACT_JACKHAMMER : ACT_PICKAXE, moves );
+    p.activity.targets.push_back( item_location( p, chosen_item ) );
     p.activity.placement = here.getabs( src_loc );
     return true;