--- a/layout/printing/nsPrintData.cpp
+++ b/layout/printing/nsPrintData.cpp
@@ -24,17 +24,16 @@ extern mozilla::LazyLogModule gPrintingL
 //-- nsPrintData Class Impl
 //---------------------------------------------------
 nsPrintData::nsPrintData(ePrintDataType aType)
     : mType(aType),
       mPrintDocList(0),
       mOnStartSent(false),
       mIsAborted(false),
       mPreparingForPrint(false),
-      mShrinkToFit(false),
       mNumPrintablePages(0),
       mShrinkRatio(1.0) {}
 
 nsPrintData::~nsPrintData() {
   // Only Send an OnEndPrinting if we have started printing
   if (mOnStartSent && mType != eIsPrintPreview) {
     OnEndPrinting();
   }

--- a/layout/printing/nsPrintData.h
+++ b/layout/printing/nsPrintData.h
@@ -58,17 +58,16 @@ class nsPrintData {
   // Array of non-owning pointers to all the nsPrintObjects owned by this
   // nsPrintData. This includes this->mPrintObject, as well as all of its
   // mKids (and their mKids, etc.)
   nsTArray<nsPrintObject*> mPrintDocList;
 
   bool mOnStartSent;
   bool mIsAborted;          // tells us the document is being aborted
   bool mPreparingForPrint;  // see comments above
-  bool mShrinkToFit;
   int32_t mNumPrintablePages;
   float mShrinkRatio;
 
  private:
   nsPrintData() = delete;
   nsPrintData& operator=(const nsPrintData& aOther) = delete;
 
   ~nsPrintData();  // non-virtual

--- a/layout/printing/nsPrintJob.cpp
+++ b/layout/printing/nsPrintJob.cpp
@@ -429,17 +429,17 @@ nsresult nsPrintJob::DoCommonPrint(bool 
     return NS_ERROR_FAILURE;
   }
 
   // XXX This isn't really correct...
   if (!printData->mPrintObject->mDocument ||
       !printData->mPrintObject->mDocument->GetRootElement())
     return NS_ERROR_GFX_PRINTER_STARTDOC;
 
-  mPrintSettings->GetShrinkToFit(&printData->mShrinkToFit);
+  mPrintSettings->GetShrinkToFit(&mShrinkToFit);
 
   bool printingViaParent =
       XRE_IsContentProcess() && StaticPrefs::print_print_via_parent();
   nsCOMPtr<nsIDeviceContextSpec> devspec;
   if (printingViaParent) {
     devspec = new nsDeviceContextSpecProxy(mRemotePrintJob);
   } else {
     devspec = do_CreateInstance("@mozilla.org/gfx/devicecontextspec;1", &rv);
@@ -826,17 +826,17 @@ nsresult nsPrintJob::SetupToPrintContent
     if (NS_WARN_IF(mPrt != printData)) {
       return NS_ERROR_FAILURE;
     }
     didReconstruction = true;
   }
 
   // Here is where we figure out if extra reflow for shrinking the content
   // is required.
-  if (printData->mShrinkToFit) {
+  if (mShrinkToFit) {
     printData->mShrinkRatio = printData->mPrintObject->mShrinkRatio;
 
     if (printData->mShrinkRatio < 0.998f) {
       nsresult rv = ReconstructAndReflow();
       if (NS_WARN_IF(NS_FAILED(rv))) {
         return rv;
       }
       // If the printing was canceled or restarted with different data,
@@ -1131,17 +1131,17 @@ nsPrintJob::OnContentBlockingEvent(nsIWe
   MOZ_ASSERT_UNREACHABLE("notification excluded in AddProgressListener(...)");
   return NS_OK;
 }
 
 //-------------------------------------------------------
 
 void nsPrintJob::UpdateZoomRatio(nsPrintObject* aPO) {
   if (!aPO->mParent) {
-    if (mPrt->mShrinkToFit) {
+    if (mShrinkToFit) {
       aPO->mZoomRatio = mPrt->mShrinkRatio;
       // If we're actually going to scale (the factor is less than 1), we
       // reduce the scale factor slightly to avoid the possibility of floating
       // point rounding error causing slight clipping of the longest lines.
       if (aPO->mZoomRatio != 1.0f) {
         aPO->mZoomRatio -= 0.005f;
       }
     } else {
@@ -1178,17 +1178,17 @@ nsresult nsPrintJob::UpdateSelectionAndS
     }
   }
 
   // If we are trying to shrink the contents to fit on the page
   // we must first locate the "pageContent" frame
   // Then we walk the frame tree and look for the "xmost" frame
   // this is the frame where the right-hand side of the frame extends
   // the furthest
-  if (mPrt->mShrinkToFit && aDocumentIsTopLevel) {
+  if (mShrinkToFit && aDocumentIsTopLevel) {
     nsPageSequenceFrame* pageSeqFrame = aPO->mPresShell->GetPageSequenceFrame();
     NS_ENSURE_STATE(pageSeqFrame);
     aPO->mShrinkRatio = pageSeqFrame->GetSTFPercent();
     // Limit the shrink-to-fit scaling for some text-ish type of documents.
     nsAutoString contentType;
     aPO->mPresShell->GetDocument()->GetContentType(contentType);
     if (contentType.EqualsLiteral("application/xhtml+xml") ||
         StringBeginsWith(contentType, u"text/"_ns)) {

--- a/layout/printing/nsPrintJob.h
+++ b/layout/printing/nsPrintJob.h
@@ -261,15 +261,16 @@ class nsPrintJob final : public nsIWebPr
   PrintPreviewResolver mPrintPreviewCallback;
 
   float mScreenDPI = 115.0f;
 
   bool mCreatedForPrintPreview = false;
   bool mIsCreatingPrintPreview = false;
   bool mIsDoingPrinting = false;
   bool mDidLoadDataForPrinting = false;
+  bool mShrinkToFit = false;
   bool mDoingInitialReflow = false;
   bool mIsDestroying = false;
   bool mDisallowSelectionPrint = false;
   bool mIsForModalWindow = false;
 };
 
 #endif  // nsPrintJob_h