1 files changed, 2 insertions, 1 deletions
diff --git a/components/layout/block.rs b/components/layout/block.rs
index 40bc9eb9413..790003abc3a 100644
--- a/components/layout/block.rs
+++ b/components/layout/block.rs
@@ -31,6 +31,7 @@ use app_units::{Au, MAX_AU};
 use context::LayoutContext;
 use display_list_builder::{BlockFlowDisplayListBuilding, BorderPaintingMode};
 use display_list_builder::{DisplayListBuildState, EstablishContainingBlock};
+use display_list_builder::StackingContextCollectionState;
 use euclid::{Point2D, Rect, SideOffsets2D, Size2D};
 use floats::{ClearType, FloatKind, Floats, PlacementInfo};
 use flow::{self, BaseFlow, EarlyAbsolutePositionInfo, Flow, FlowClass, ForceNonfloatedFlag};
@@ -2150,7 +2151,7 @@ impl Flow for BlockFlow {
         }
     }
 
-    fn collect_stacking_contexts(&mut self, state: &mut DisplayListBuildState) {
+    fn collect_stacking_contexts(&mut self, state: &mut StackingContextCollectionState) {
         self.collect_stacking_contexts_for_block(state, EstablishContainingBlock::Yes);
     }