diff --git a/src/libraries/System.Runtime/tests/System.IO.FileSystem.Tests/Directory/Delete_MountVolume.cs b/src/libraries/System.Runtime/tests/System.IO.FileSystem.Tests/Directory/Delete_MountVolume.cs
index f4b153d94d9326..ed74831de984f6 100644
--- a/src/libraries/System.Runtime/tests/System.IO.FileSystem.Tests/Directory/Delete_MountVolume.cs
+++ b/src/libraries/System.Runtime/tests/System.IO.FileSystem.Tests/Directory/Delete_MountVolume.cs
@@ -79,8 +79,11 @@ public static void RunTest()
                         }
                         finally
                         {
-                            MountHelper.Unmount(mountedDirName);
-                            DeleteDir(mountedDirName, true);
+                            if (Directory.Exists(mountedDirName))
+                            {
+                                MountHelper.Unmount(mountedDirName);
+                                DeleteDir(mountedDirName, true);
+                            }
                         }
                         File.AppendAllText(debugFileName, string.Format("Completed scenario {0}", Environment.NewLine));
                     }
@@ -124,8 +127,11 @@ public static void RunTest()
                         }
                         finally
                         {
-                            MountHelper.Unmount(mountedDirName);
-                            DeleteDir(mountedDirName, true);
+                            if (Directory.Exists(mountedDirName))
+                            {
+                                MountHelper.Unmount(mountedDirName);
+                                DeleteDir(mountedDirName, true);
+                            }
                         }
                         File.AppendAllText(debugFileName, string.Format("Completed scenario {0}", Environment.NewLine));
                     }
@@ -166,8 +172,11 @@ public static void RunTest()
                         }
                         finally
                         {
-                            MountHelper.Unmount(mountedDirName);
-                            DeleteDir(mountedDirName, true);
+                            if (Directory.Exists(mountedDirName))
+                            {
+                                MountHelper.Unmount(mountedDirName);
+                                DeleteDir(mountedDirName, true);
+                            }
                         }
                         File.AppendAllText(debugFileName, string.Format("Completed scenario {0}", Environment.NewLine));
                     }
@@ -208,8 +217,11 @@ public static void RunTest()
                         }
                         finally
                         {
-                            MountHelper.Unmount(mountedDirName);
-                            DeleteDir(mountedDirName, true);
+                            if (Directory.Exists(mountedDirName))
+                            {
+                                MountHelper.Unmount(mountedDirName);
+                                DeleteDir(mountedDirName, true);
+                            }
                         }
                         File.AppendAllText(debugFileName, string.Format("Completed scenario {0}", Environment.NewLine));
                     }