diff --git a/dnn/src/x86/conv_bias/int8/algos.cpp b/dnn/src/x86/conv_bias/int8/algos.cpp
index 1e2a059bb504fff5643c66eaac46a4d05c889715..ba3aeb2c56bf637746a97d7b233cb1c5e9f625f3 100644
--- a/dnn/src/x86/conv_bias/int8/algos.cpp
+++ b/dnn/src/x86/conv_bias/int8/algos.cpp
@@ -267,18 +267,13 @@ WorkspaceBundle ConvBiasImpl::AlgoMkldnnQint8::get_bundle(
     }
 }
 
-#define REORDER_MEMORY(megdnn_memory, reorder_memory)                          \
-    do {                                                                       \
-        if (megdnn_memory.get_desc() != conv_prim_desc.src_desc()) {           \
-            reorder_memory = memory(conv_prim_desc.src_desc(), eng_mkldnn);    \
-            auto reorder_pd = reorder::primitive_desc(                         \
-                    eng_mkldnn, megdnn_memory.get_desc(), eng_mkldnn,          \
-                    reorder_memory.get_desc());                                \
-            auto reorder_exe = reorder(reorder_pd);                            \
-            reorder_exe.execute(stream_mkldnn, megdnn_memory, reorder_memory); \
-        } else {                                                               \
-            reorder_memory = megdnn_memory;                                    \
-        }                                                                      \
+#define REORDER_MEMORY(megdnn_memory, reorder_memory)                      \
+    do {                                                                   \
+        auto reorder_pd = reorder::primitive_desc(                         \
+                eng_mkldnn, megdnn_memory.get_desc(), eng_mkldnn,          \
+                reorder_memory.get_desc());                                \
+        auto reorder_exe = reorder(reorder_pd);                            \
+        reorder_exe.execute(stream_mkldnn, megdnn_memory, reorder_memory); \
     } while (0)
 
 void ConvBiasImpl::AlgoMkldnnQint8::kern_mkldnn_s8x8x32(
@@ -340,7 +335,10 @@ void ConvBiasImpl::AlgoMkldnnQint8::kern_mkldnn_s8x8x32(
 
         auto conv = convolution_forward(conv_prim_desc);
 
-        memory conv_src_memory, conv_weight_memory, conv_dst_memory;
+        memory conv_src_memory = memory(conv_prim_desc.src_desc(), eng_mkldnn);
+        memory conv_weight_memory =
+                memory(conv_prim_desc.weights_desc(), eng_mkldnn);
+        memory conv_dst_memory;
 
         REORDER_MEMORY(megdnn_src_memory, conv_src_memory);
         REORDER_MEMORY(megdnn_weight_memory, conv_weight_memory);
@@ -354,7 +352,7 @@ void ConvBiasImpl::AlgoMkldnnQint8::kern_mkldnn_s8x8x32(
         conv.execute(stream_mkldnn, {{DNNL_ARG_SRC, conv_src_memory},
                                      {DNNL_ARG_WEIGHTS, conv_weight_memory},
                                      {DNNL_ARG_DST, conv_dst_memory}});
-        REORDER_MEMORY(megdnn_dst_memory, conv_dst_memory);
+        REORDER_MEMORY(conv_dst_memory, megdnn_dst_memory);
         stream_mkldnn.wait();
     } else {
         std::vector<primitive> net;