1 files changed, 1 insertions, 1 deletions
diff --git a/include/wabt/binary-reader-nop.h b/include/wabt/binary-reader-nop.h
index 9d4a9a39..75e28d4a 100644
--- a/include/wabt/binary-reader-nop.h
+++ b/include/wabt/binary-reader-nop.h
@@ -273,7 +273,7 @@ class BinaryReaderNop : public BinaryReaderDelegate {
   Result OnLocalSetExpr(Index local_index) override { return Result::Ok; }
   Result OnLocalTeeExpr(Index local_index) override { return Result::Ok; }
   Result OnLoopExpr(Type sig_type) override { return Result::Ok; }
-  Result OnMemoryCopyExpr(Index srcmemidx, Index destmemidx) override {
+  Result OnMemoryCopyExpr(Index destmemidx, Index srcmemidx) override {
     return Result::Ok;
   }
   Result OnDataDropExpr(Index segment_index) override { return Result::Ok; }