diff --git a/src/core/document.js b/src/core/document.js
index ab0d12cb2..4c77f10ca 100644
--- a/src/core/document.js
+++ b/src/core/document.js
@@ -787,7 +787,7 @@ class PDFDocument {
   get numPages() {
     let num = 0;
     if (this.xfaFactory) {
-      num = this.xfaFactory.numberPages;
+      num = this.xfaFactory.numPages;
     } else if (this.linearization) {
       num = this.linearization.numPages;
     } else {
diff --git a/src/core/xfa/factory.js b/src/core/xfa/factory.js
index fb4568aeb..e21d07863 100644
--- a/src/core/xfa/factory.js
+++ b/src/core/xfa/factory.js
@@ -54,7 +54,7 @@ class XFAFactory {
     return this.dims[pageIndex];
   }
 
-  get numberPages() {
+  get numPages() {
     if (!this.pages) {
       this._createPages();
     }
diff --git a/test/unit/xfa_tohtml_spec.js b/test/unit/xfa_tohtml_spec.js
index e9ba898bb..da16e4bce 100644
--- a/test/unit/xfa_tohtml_spec.js
+++ b/test/unit/xfa_tohtml_spec.js
@@ -86,7 +86,7 @@ describe("XFAFactory", function () {
       const factory = new XFAFactory({ "xdp:xdp": xml });
       factory.setFonts([]);
 
-      expect(factory.numberPages).toEqual(2);
+      expect(factory.numPages).toEqual(2);
 
       const pages = factory.getPages();
       const page1 = pages.children[0];
@@ -174,7 +174,7 @@ describe("XFAFactory", function () {
       `;
       const factory = new XFAFactory({ "xdp:xdp": xml });
 
-      expect(factory.numberPages).toEqual(1);
+      expect(factory.numPages).toEqual(1);
 
       const pages = factory.getPages();
       const field = searchHtmlNode(pages, "name", "img");
@@ -208,7 +208,7 @@ describe("XFAFactory", function () {
       `;
       const factory = new XFAFactory({ "xdp:xdp": xml });
 
-      expect(factory.numberPages).toEqual(1);
+      expect(factory.numPages).toEqual(1);
 
       const pages = factory.getPages();
       const page1 = pages.children[0];
@@ -263,7 +263,7 @@ describe("XFAFactory", function () {
       const factory = new XFAFactory({ "xdp:xdp": xml });
       factory.setFonts([]);
 
-      expect(factory.numberPages).toEqual(1);
+      expect(factory.numPages).toEqual(1);
 
       const pages = factory.getPages();
       const table = searchHtmlNode(
@@ -336,7 +336,7 @@ describe("XFAFactory", function () {
       `;
       const factory = new XFAFactory({ "xdp:xdp": xml });
 
-      expect(factory.numberPages).toEqual(1);
+      expect(factory.numPages).toEqual(1);
 
       const pages = factory.getPages();
       const field = searchHtmlNode(pages, "name", "input");
@@ -378,7 +378,7 @@ describe("XFAFactory", function () {
       `;
       const factory = new XFAFactory({ "xdp:xdp": xml });
 
-      expect(factory.numberPages).toEqual(1);
+      expect(factory.numPages).toEqual(1);
 
       const pages = factory.getPages();
       const field = searchHtmlNode(pages, "name", "input");
@@ -420,7 +420,7 @@ describe("XFAFactory", function () {
       `;
       const factory = new XFAFactory({ "xdp:xdp": xml });
 
-      expect(factory.numberPages).toEqual(1);
+      expect(factory.numPages).toEqual(1);
 
       const pages = factory.getPages();
       const field = searchHtmlNode(pages, "name", "input");
@@ -463,7 +463,7 @@ describe("XFAFactory", function () {
       `;
       const factory = new XFAFactory({ "xdp:xdp": xml });
 
-      expect(factory.numberPages).toEqual(1);
+      expect(factory.numPages).toEqual(1);
 
       const pages = factory.getPages();
       const field1 = searchHtmlNode(pages, "name", "input");
@@ -517,7 +517,7 @@ describe("XFAFactory", function () {
     `;
     const factory = new XFAFactory({ "xdp:xdp": xml });
 
-    expect(factory.numberPages).toEqual(1);
+    expect(factory.numPages).toEqual(1);
 
     const pages = factory.getPages();
     const field1 = searchHtmlNode(pages, "name", "input");
@@ -560,7 +560,7 @@ describe("XFAFactory", function () {
 
     // A valid, and complete, URL.
     factory = new XFAFactory({ "xdp:xdp": getXml("https://www.example.com/") });
-    expect(factory.numberPages).toEqual(1);
+    expect(factory.numPages).toEqual(1);
     pages = factory.getPages();
     a = searchHtmlNode(pages, "name", "a");
     expect(a.value).toEqual("https://www.example.com/");
@@ -568,7 +568,7 @@ describe("XFAFactory", function () {
 
     // A valid, but incomplete, URL.
     factory = new XFAFactory({ "xdp:xdp": getXml("www.example.com/") });
-    expect(factory.numberPages).toEqual(1);
+    expect(factory.numPages).toEqual(1);
     pages = factory.getPages();
     a = searchHtmlNode(pages, "name", "a");
     expect(a.value).toEqual("www.example.com/");
@@ -576,7 +576,7 @@ describe("XFAFactory", function () {
 
     // A valid email-address.
     factory = new XFAFactory({ "xdp:xdp": getXml("mailto:test@example.com") });
-    expect(factory.numberPages).toEqual(1);
+    expect(factory.numPages).toEqual(1);
     pages = factory.getPages();
     a = searchHtmlNode(pages, "name", "a");
     expect(a.value).toEqual("mailto:test@example.com");
@@ -584,7 +584,7 @@ describe("XFAFactory", function () {
 
     // Not a valid URL.
     factory = new XFAFactory({ "xdp:xdp": getXml("qwerty/") });
-    expect(factory.numberPages).toEqual(1);
+    expect(factory.numPages).toEqual(1);
     pages = factory.getPages();
     a = searchHtmlNode(pages, "name", "a");
     expect(a.value).toEqual("qwerty/");
@@ -635,7 +635,7 @@ describe("XFAFactory", function () {
     `;
     const factory = new XFAFactory({ "xdp:xdp": xml });
 
-    expect(factory.numberPages).toEqual(1);
+    expect(factory.numPages).toEqual(1);
 
     const pages = factory.getPages();
     let a = searchHtmlNode(pages, "name", "a");