diff --git a/layout/generic/BlockReflowInput.cpp b/layout/generic/BlockReflowInput.cpp
index 26ea6a465368..074dc396ce30 100644
--- a/layout/generic/BlockReflowInput.cpp
+++ b/layout/generic/BlockReflowInput.cpp
@@ -1065,10 +1065,10 @@ BlockReflowInput::PushFloatPastBreak(nsIFrame *aFloat)
  * Place below-current-line floats.
  */
 void
-BlockReflowInput::PlaceBelowCurrentLineFloats(nsFloatCacheFreeList& aList,
-                                                nsLineBox* aLine)
+BlockReflowInput::PlaceBelowCurrentLineFloats(nsLineBox* aLine)
 {
-  nsFloatCache* fc = aList.Head();
+  MOZ_ASSERT(mBelowCurrentLineFloats.NotEmpty());
+  nsFloatCache* fc = mBelowCurrentLineFloats.Head();
   while (fc) {
 #ifdef DEBUG
     if (nsBlockFrame::gNoisyReflow) {
@@ -1082,12 +1082,13 @@ BlockReflowInput::PlaceBelowCurrentLineFloats(nsFloatCacheFreeList& aList,
     bool placed = FlowAndPlaceFloat(fc->mFloat);
     nsFloatCache *next = fc->Next();
     if (!placed) {
-      aList.Remove(fc);
+      mBelowCurrentLineFloats.Remove(fc);
       delete fc;
       aLine->SetHadFloatPushed();
     }
     fc = next;
   }
+  aLine->AppendFloats(mBelowCurrentLineFloats);
 }
 
 nscoord
diff --git a/layout/generic/BlockReflowInput.h b/layout/generic/BlockReflowInput.h
index 8f5933a1b89f..2aa91c672f44 100644
--- a/layout/generic/BlockReflowInput.h
+++ b/layout/generic/BlockReflowInput.h
@@ -154,8 +154,7 @@ public:
 
   bool FlowAndPlaceFloat(nsIFrame* aFloat);
 
-  void PlaceBelowCurrentLineFloats(nsFloatCacheFreeList& aFloats,
-                                   nsLineBox* aLine);
+  void PlaceBelowCurrentLineFloats(nsLineBox* aLine);
 
   // Returns the first coordinate >= aBCoord that clears the
   // floats indicated by aBreakType and has enough inline size between floats
diff --git a/layout/generic/nsBlockFrame.cpp b/layout/generic/nsBlockFrame.cpp
index 57ea749ff68b..294b27551392 100644
--- a/layout/generic/nsBlockFrame.cpp
+++ b/layout/generic/nsBlockFrame.cpp
@@ -4802,8 +4802,7 @@ nsBlockFrame::PlaceLine(BlockReflowInput& aState,
   if (aState.mBelowCurrentLineFloats.NotEmpty()) {
     // Reflow the below-current-line floats, which places on the line's
     // float list.
-    aState.PlaceBelowCurrentLineFloats(aState.mBelowCurrentLineFloats, aLine);
-    aLine->AppendFloats(aState.mBelowCurrentLineFloats);
+    aState.PlaceBelowCurrentLineFloats(aLine);
   }
 
   // When a line has floats, factor them into the combined-area