diff --git a/core/src/scheduler/ResourceMgr.cpp b/core/src/scheduler/ResourceMgr.cpp
index 383ad89c4e4b168085135880eda4279665ee4658..187cd97bc7b9444176b51212dda2ec6547e77c8e 100644
--- a/core/src/scheduler/ResourceMgr.cpp
+++ b/core/src/scheduler/ResourceMgr.cpp
@@ -173,7 +173,7 @@ ResourceMgr::GetNumGpuResource() const {
 json
 ResourceMgr::Dump() const {
     json resources{};
-    for (auto &res : resources_) {
+    for (auto& res : resources_) {
         resources.push_back(res->Dump());
     }
     json ret{
diff --git a/core/src/scheduler/resource/Node.cpp b/core/src/scheduler/resource/Node.cpp
index 9621c4324e94dd4d7e2dec1d1b8471ca988dbb7c..dcf03a321c434dbf9a3c0d4d9d9b09c77a652c88 100644
--- a/core/src/scheduler/resource/Node.cpp
+++ b/core/src/scheduler/resource/Node.cpp
@@ -41,7 +41,7 @@ Node::GetNeighbours() {
 json
 Node::Dump() const {
     json neighbours;
-    for (auto & neighbour : neighbours_) {
+    for (auto& neighbour : neighbours_) {
         json n;
         n["id"] = neighbour.first;
         n["connection"] = neighbour.second.connection.Dump();
diff --git a/core/src/scheduler/resource/Resource.cpp b/core/src/scheduler/resource/Resource.cpp
index aac1953845a92937389b0fa2f95195732a9d5a83..1cd4cde6092771ee0ab2d4d60762a91aaeb8def2 100644
--- a/core/src/scheduler/resource/Resource.cpp
+++ b/core/src/scheduler/resource/Resource.cpp
@@ -44,9 +44,7 @@ ToString(ResourceType type) {
         case ResourceType::GPU: {
             return "GPU";
         }
-        default: {
-            return "UNKNOWN";
-        }
+        default: { return "UNKNOWN"; }
     }
 }