diff --git a/src/ast.rs b/src/ast.rs
index 29d1004..c9c755f 100644
--- a/src/ast.rs
+++ b/src/ast.rs
@@ -211,7 +211,7 @@ pub struct MonotonicArgs {
     pub binds: Ident,
 
     /// The priority of this monotonic
-    pub priority: u8,
+    pub priority: Option<u8>,
 
     /// If this is the default monotonic
     pub default: bool,
diff --git a/src/parse.rs b/src/parse.rs
index 09e6433..08ad6cb 100644
--- a/src/parse.rs
+++ b/src/parse.rs
@@ -470,7 +470,6 @@ fn monotonic_args(tokens: TokenStream2) -> parse::Result<MonotonicArgs> {
                 "`binds = ...` is missing",
             ));
         };
-        let priority = priority.unwrap_or(1);
         let default = default.unwrap_or(false);
 
         Ok(MonotonicArgs {