1 files changed, 1 insertions, 1 deletions
diff --git a/src/lib.rs b/src/lib.rs
index cca1a58..b5d557f 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -692,7 +692,7 @@ impl Block {
         self.ops.len()
     }
 
-    fn patch(&mut self, op: Op, pos: usize) {
+    fn patch(&mut self, pos: usize, op: Op) {
         self.ops[pos] = op;
     }
 }