diff --git a/imperative/python/src/tensor.cpp b/imperative/python/src/tensor.cpp
index ee28d8fd2b1758210192277f0133f998b047eb4b..73d3c2697342c646356d1655f08fd852f312bd37 100644
--- a/imperative/python/src/tensor.cpp
+++ b/imperative/python/src/tensor.cpp
@@ -13,6 +13,7 @@
 #include "megbrain/common.h"
 #include "megbrain/imperative/ops/utility.h"
 #include "megbrain/imperative/ops/backward_graph.h"
+#include "megbrain/imperative/ops/autogen.h"
 #include "megbrain/imperative/profiler.h"
 #include "megbrain/opr/io.h"
 
diff --git a/imperative/src/impl/ops/utility.cpp b/imperative/src/impl/ops/utility.cpp
index d4e8deefa93f53a9db5a8def19f489b5b42139ca..14654134bc96f88dd9be6bc22316f132e9e96c36 100644
--- a/imperative/src/impl/ops/utility.cpp
+++ b/imperative/src/impl/ops/utility.cpp
@@ -31,8 +31,6 @@ OP_TRAIT_REG(FastpathCopy,FastpathCopy)
     .fallback();
 }} // fastpathcopy
 
-MGB_DYN_TYPE_OBJ_FINAL_IMPL(FastpathCopy);
-
 namespace { namespace identity {
 auto apply_on_var_node(
         const OpDef& def,
diff --git a/imperative/src/include/megbrain/imperative/ops/utility.h b/imperative/src/include/megbrain/imperative/ops/utility.h
index ab58283c6b589311231535f67c903f1a20118aab..dc327d08d8e87f55968df59bf1a71bb621cd9c2f 100644
--- a/imperative/src/include/megbrain/imperative/ops/utility.h
+++ b/imperative/src/include/megbrain/imperative/ops/utility.h
@@ -35,18 +35,4 @@ struct GenericPyOp final : OpDefImplBase<GenericPyOp> {
     MGB_DYN_TYPE_OBJ_FINAL_DECL;
 };
 
-struct FastpathCopy final : OpDefImplBase<FastpathCopy> {
-    FastpathCopy() = default;
-
-    size_t hash() const override {
-        return mgb::hash(this->dyn_typeinfo());
-    }
-
-    bool is_same_st(const Hashable& rhs) const override {
-        return this->dyn_typeinfo() == rhs.dyn_typeinfo();
-    }
-
-    MGB_DYN_TYPE_OBJ_FINAL_DECL;
-};
-
 } // namespace mgb::imperative
diff --git a/src/core/include/megbrain/ir/ops.td b/src/core/include/megbrain/ir/ops.td
index a74af609a61a2eec6e48de30d05ed09ad80396af..7bb892e2eabe8fe0ac745b298555a061528a97d4 100644
--- a/src/core/include/megbrain/ir/ops.td
+++ b/src/core/include/megbrain/ir/ops.td
@@ -375,4 +375,6 @@ def CvtColor: MgbHashableOp<"CvtColor", [CvtColorParam]>;
 
 def CheckHasInf: MgbHashableOp<"CheckHasInf", [EmptyParam]>;
 
+def FastpathCopy: MgbHashableOp<"FastpathCopy">;
+
 #endif // MGB_OPS