diff --git a/src/activity_actor.cpp b/src/activity_actor.cpp
index 9ba98d5029e9f..bec76ff8b82fa 100644
--- a/src/activity_actor.cpp
+++ b/src/activity_actor.cpp
@@ -1132,7 +1132,7 @@ std::unique_ptr<activity_actor> hacksaw_activity_actor::deserialize( JsonValue &
 bikerack_racking_activity_actor::bikerack_racking_activity_actor( vehicle &parent_vehicle,
         std::vector<std::vector<int>> parts ) : parts( std::move( parts ) )
 {
-    parent_vehicle_pos = parent_vehicle.pos_bub();
+    parent_vehicle_pos = parent_vehicle.bub_part_pos( 0 );
 }
 
 void bikerack_racking_activity_actor::start( player_activity &act, Character & )
@@ -1187,7 +1187,7 @@ bikerack_unracking_activity_actor::bikerack_unracking_activity_actor( vehicle &p
         std::vector<int> parts, std::vector<int> racks )
     : parts( std::move( parts ) ), racks( std::move( racks ) )
 {
-    parent_vehicle_pos = parent_vehicle.pos_bub();
+    parent_vehicle_pos = parent_vehicle.bub_part_pos( 0 );
 }
 
 void bikerack_unracking_activity_actor::start( player_activity &act, Character & )
diff --git a/src/handle_liquid.cpp b/src/handle_liquid.cpp
index a266c2869a163..6da1d6bebe4f9 100644
--- a/src/handle_liquid.cpp
+++ b/src/handle_liquid.cpp
@@ -82,7 +82,7 @@ static void serialize_liquid_target( player_activity &act, const vpart_reference
 {
     act.values.push_back( static_cast<int>( liquid_target_type::VEHICLE ) );
     act.values.push_back( 0 ); // dummy
-    act.coords.push_back( vp.vehicle().global_pos3() );
+    act.coords.push_back( vp.vehicle().global_part_pos3( 0 ) );
     act.values.push_back( vp.part_index() ); // tank part index
 }
 
diff --git a/src/vehicle.h b/src/vehicle.h
index d487c92353645..c6154e5997e98 100644
--- a/src/vehicle.h
+++ b/src/vehicle.h
@@ -1214,7 +1214,9 @@ class vehicle
         // Returns the location of the vehicle in global overmap terrain coordinates.
         tripoint_abs_omt global_omt_location() const;
         // Returns the coordinates (in map squares) of the vehicle relative to the local map.
+        // Warning: Don't assume this position contains a vehicle part
         tripoint global_pos3() const;
+        // Warning: Don't assume this position contains a vehicle part
         tripoint_bub_ms pos_bub() const;
         /**
          * Get the coordinates of the studied part of the vehicle