diff --git a/Duplicati/Library/Main/Options.cs b/Duplicati/Library/Main/Options.cs
index 3161c111e..e36f24da5 100644
--- a/Duplicati/Library/Main/Options.cs
+++ b/Duplicati/Library/Main/Options.cs
@@ -1039,6 +1039,8 @@ namespace Duplicati.Library.Main
                     return OptimizationStrategy.Off;
                 else if (string.Equals(strategy, "required", StringComparison.InvariantCultureIgnoreCase))
                     return OptimizationStrategy.Required;
+                else if (string.Equals(strategy, "auto", StringComparison.InvariantCultureIgnoreCase))
+                    return OptimizationStrategy.Auto;
                 else
                     return OptimizationStrategy.Off;
             }
@@ -1079,6 +1081,8 @@ namespace Duplicati.Library.Main
                     return OptimizationStrategy.Off;
                 else if (string.Equals(strategy, "required", StringComparison.InvariantCultureIgnoreCase))
                     return OptimizationStrategy.Required;
+                else if (string.Equals(strategy, "auto", StringComparison.InvariantCultureIgnoreCase))
+                    return OptimizationStrategy.Auto;
                 else
                     return OptimizationStrategy.Off;
             }