diff --git a/src/aheader.rs b/src/aheader.rs
index 676ee9306..47e374aef 100644
--- a/src/aheader.rs
+++ b/src/aheader.rs
@@ -44,8 +44,8 @@ impl str::FromStr for EncryptPreference {
     fn from_str(s: &str) -> Result<Self, Self::Err> {
         match s {
             "mutual" => Ok(EncryptPreference::Mutual),
-            "reset" => Ok(EncryptPreference::Reset),
-            _ => Ok(EncryptPreference::NoPreference),
+            "nopreference" => Ok(EncryptPreference::NoPreference),
+            _ => Err(()),
         }
     }
 }