diff --git a/toolkit/components/osfile/modules/osfile_shared_front.jsm b/toolkit/components/osfile/modules/osfile_shared_front.jsm
index f6f09dc73d0..084ef1a776b 100644
--- a/toolkit/components/osfile/modules/osfile_shared_front.jsm
+++ b/toolkit/components/osfile/modules/osfile_shared_front.jsm
@@ -474,8 +474,10 @@ AbstractFile.writeAtomic =
   */
 AbstractFile.removeDir = function(path, options = {}) {
   let iterator = new OS.File.DirectoryIterator(path);
-  if (!iterator.exists() && options.ignoreAbsent) {
-    return;
+  if (!iterator.exists()) {
+    if (!("ignoreAbsent" in options) || options.ignoreAbsent) {
+      return;
+    }
   }
 
   try {
diff --git a/toolkit/components/osfile/tests/xpcshell/test_removeDir.js b/toolkit/components/osfile/tests/xpcshell/test_removeDir.js
index af1b2138b31..095b8f0d4fa 100644
--- a/toolkit/components/osfile/tests/xpcshell/test_removeDir.js
+++ b/toolkit/components/osfile/tests/xpcshell/test_removeDir.js
@@ -36,7 +36,7 @@ add_task(function() {
   // Remove non-existent directory
   let exception = null;
   try {
-    yield OS.File.removeDir(dir);
+    yield OS.File.removeDir(dir, {ignoreAbsent: false});
   } catch (ex) {
     exception = ex;
   }
@@ -46,12 +46,13 @@ add_task(function() {
 
   // Remove non-existent directory with ignoreAbsent
   yield OS.File.removeDir(dir, {ignoreAbsent: true});
+  yield OS.File.removeDir(dir);
 
-  // Remove file
+  // Remove file with ignoreAbsent: false
   yield OS.File.writeAtomic(file, "content", { tmpPath: file + ".tmp" });
   exception = null;
   try {
-    yield OS.File.removeDir(file);
+    yield OS.File.removeDir(file, {ignoreAbsent: false});
   } catch (ex) {
     exception = ex;
   }
@@ -67,15 +68,14 @@ add_task(function() {
   // Remove directory that contains one file
   yield OS.File.makeDir(dir);
   yield OS.File.writeAtomic(file1, "content", { tmpPath: file1 + ".tmp" });
-  //yield OS.File.open(file1, {create:true});
-  yield OS.File.removeDir(dir)
+  yield OS.File.removeDir(dir);
   do_check_false((yield OS.File.exists(dir)));
 
   // Remove directory that contains multiple files
   yield OS.File.makeDir(dir);
   yield OS.File.writeAtomic(file1, "content", { tmpPath: file1 + ".tmp" });
   yield OS.File.writeAtomic(file2, "content", { tmpPath: file2 + ".tmp" });
-  yield OS.File.removeDir(dir)
+  yield OS.File.removeDir(dir);
   do_check_false((yield OS.File.exists(dir)));
 
   // Remove directory that contains a file and a directory