diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 5fddd520..382f36d4 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -64,6 +64,7 @@ target_include_directories(megbrain
     PUBLIC $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>
     PRIVATE ${PROJECT_SOURCE_DIR}/third_party/midout/src
 )
+
 foreach (INCPATH IN LISTS MGB_INC)
     target_include_directories(megbrain
         PUBLIC $<BUILD_INTERFACE:${INCPATH}>
diff --git a/src/core/include/megbrain/comp_node.h b/src/core/include/megbrain/comp_node.h
index 647f7466..0b2250a8 100644
--- a/src/core/include/megbrain/comp_node.h
+++ b/src/core/include/megbrain/comp_node.h
@@ -119,6 +119,7 @@ class CompNode {
              *
              * device == -1 means logical default device (maps to 0 by default,
              * and can be changed by set_device_map)
+             *
              */
             int device = -1;
 
diff --git a/src/core/include/megbrain/comp_node_env.h b/src/core/include/megbrain/comp_node_env.h
index 2d04a1cc..3b9f1af8 100644
--- a/src/core/include/megbrain/comp_node_env.h
+++ b/src/core/include/megbrain/comp_node_env.h
@@ -20,6 +20,7 @@
 #include "megdnn/handle.h"
 
 
+
 #if MGB_CUDA
 #include <cuda_runtime.h>
 #include <cuda.h>
diff --git a/src/core/test/comp_node.cpp b/src/core/test/comp_node.cpp
index 663d80b6..05bd4c65 100644
--- a/src/core/test/comp_node.cpp
+++ b/src/core/test/comp_node.cpp
@@ -481,7 +481,6 @@ void test_peer_copy_from_device(const char* comp_node) {
     opr::Sleep::sleep(cn_gpu, 0.1);
     dev_a.copy_from(dev_c);
     wait_event->record();
-
     cn_cpu.device_wait_event(*wait_event);
     dev_b.copy_from(dev_a);