diff --git a/layout/generic/nsIFrame.cpp b/layout/generic/nsIFrame.cpp
index c0d72ccdc35e..a92f0e990172 100644
--- a/layout/generic/nsIFrame.cpp
+++ b/layout/generic/nsIFrame.cpp
@@ -7375,10 +7375,8 @@ void nsIFrame::DidReflow(nsPresContext* aPresContext,
 void nsIFrame::FinishReflowWithAbsoluteFrames(nsPresContext* aPresContext,
                                               ReflowOutput& aDesiredSize,
                                               const ReflowInput& aReflowInput,
-                                              nsReflowStatus& aStatus,
-                                              bool aConstrainBSize) {
-  ReflowAbsoluteFrames(aPresContext, aDesiredSize, aReflowInput, aStatus,
-                       aConstrainBSize);
+                                              nsReflowStatus& aStatus) {
+  ReflowAbsoluteFrames(aPresContext, aDesiredSize, aReflowInput, aStatus);
 
   FinishAndStoreOverflow(&aDesiredSize, aReflowInput.mStyleDisplay);
 }
@@ -7386,8 +7384,7 @@ void nsIFrame::FinishReflowWithAbsoluteFrames(nsPresContext* aPresContext,
 void nsIFrame::ReflowAbsoluteFrames(nsPresContext* aPresContext,
                                     ReflowOutput& aDesiredSize,
                                     const ReflowInput& aReflowInput,
-                                    nsReflowStatus& aStatus,
-                                    bool aConstrainBSize) {
+                                    nsReflowStatus& aStatus) {
   if (HasAbsolutelyPositionedChildren()) {
     nsAbsoluteContainingBlock* absoluteContainer = GetAbsoluteContainingBlock();
 
@@ -7406,10 +7403,8 @@ void nsIFrame::ReflowAbsoluteFrames(nsPresContext* aPresContext,
 
     nsRect containingBlock(0, 0, containingBlockWidth, containingBlockHeight);
     AbsPosReflowFlags flags =
-        AbsPosReflowFlags::CBWidthAndHeightChanged;  // XXX could be optimized
-    if (aConstrainBSize) {
-      flags |= AbsPosReflowFlags::ConstrainHeight;
-    }
+        AbsPosReflowFlags::CBWidthAndHeightChanged |  // XXX could be optimized
+        AbsPosReflowFlags::ConstrainHeight;
     absoluteContainer->Reflow(container, aPresContext, aReflowInput, aStatus,
                               containingBlock, flags,
                               &aDesiredSize.mOverflowAreas);
diff --git a/layout/generic/nsIFrame.h b/layout/generic/nsIFrame.h
index 12a6f91774b2..a7e263506450 100644
--- a/layout/generic/nsIFrame.h
+++ b/layout/generic/nsIFrame.h
@@ -3160,8 +3160,7 @@ class nsIFrame : public nsQueryFrame {
   void FinishReflowWithAbsoluteFrames(nsPresContext* aPresContext,
                                       ReflowOutput& aDesiredSize,
                                       const ReflowInput& aReflowInput,
-                                      nsReflowStatus& aStatus,
-                                      bool aConstrainBSize = true);
+                                      nsReflowStatus& aStatus);
 
   /**
    * Updates the overflow areas of the frame. This can be called if an
@@ -4564,8 +4563,7 @@ class nsIFrame : public nsQueryFrame {
   void ReflowAbsoluteFrames(nsPresContext* aPresContext,
                             ReflowOutput& aDesiredSize,
                             const ReflowInput& aReflowInput,
-                            nsReflowStatus& aStatus,
-                            bool aConstrainBSize = true);
+                            nsReflowStatus& aStatus);
 
  private:
   nscoord ComputeISizeValueFromAspectRatio(
diff --git a/layout/tables/nsTableFrame.cpp b/layout/tables/nsTableFrame.cpp
index 360984b3a074..d5c4a10d4b59 100644
--- a/layout/tables/nsTableFrame.cpp
+++ b/layout/tables/nsTableFrame.cpp
@@ -1862,8 +1862,8 @@ void nsTableFrame::FixupPositionedTableParts(nsPresContext* aPresContext,
     // FIXME: Unconditionally using NS_UNCONSTRAINEDSIZE for the bsize and
     // ignoring any change to the reflow status aren't correct. We'll never
     // paginate absolutely positioned frames.
-    positionedPart->FinishReflowWithAbsoluteFrames(
-        PresContext(), desiredSize, reflowInput, reflowStatus, true);
+    positionedPart->FinishReflowWithAbsoluteFrames(PresContext(), desiredSize,
+                                                   reflowInput, reflowStatus);
 
     // FinishReflowWithAbsoluteFrames has updated overflow on
     // |positionedPart|.  We need to make sure that update propagates