diff --git a/DiscImageChef/Commands/ExtractFiles.cs b/DiscImageChef/Commands/ExtractFiles.cs
index 36b2c3345..2c4bd2155 100644
--- a/DiscImageChef/Commands/ExtractFiles.cs
+++ b/DiscImageChef/Commands/ExtractFiles.cs
@@ -163,6 +163,12 @@ namespace DiscImageChef.Commands
                                                 imageFormat.Id);
                 else DicConsole.WriteLine("Image format identified by {0}.", imageFormat.Name);
 
+                if (outputDir == null)
+                {
+                    DicConsole.WriteLine("Output directory missing.");
+                    return (int)ErrorNumber.MissingArgument;
+                }
+
                 if(Directory.Exists(outputDir) || File.Exists(outputDir))
                 {
                     DicConsole.ErrorWriteLine("Destination exists, aborting.");
@@ -519,4 +525,4 @@ namespace DiscImageChef.Commands
             }
         }
     }
-}
\ No newline at end of file
+}