diff --git a/src/symbols_file.cpp b/src/symbols_file.cpp
index dbb565e..093f984 100644
--- a/src/symbols_file.cpp
+++ b/src/symbols_file.cpp
@@ -994,7 +994,7 @@ public:
                 return false;
             } else {
                 HLOGD("kernel notes size: %zu", notes.size());
-                buildId_ = ElfGetBuildId(reinterpret_cast<const unsigned char *>(notes.data()), notes.size());
+                buildId_ = ElfGetBuildId(reinterpret_cast<const unsigned char*>(notes.data()), notes.size());
             }
 
             const auto startTime = std::chrono::steady_clock::now();
@@ -1068,7 +1068,7 @@ private:
         std::string sysFile = "/sys/module/" + module_ + "/notes/.note.gnu.build-id";
         std::string buildIdRaw = ReadFileToString(sysFile);
         if (!buildIdRaw.empty()) {
-            buildId_ = ElfGetBuildId(reinterpret_cast<const unsigned char *>(buildIdRaw.data()), buildIdRaw.size());
+            buildId_ = ElfGetBuildId(reinterpret_cast<const unsigned char*>(buildIdRaw.data()), buildIdRaw.size());
             HLOGD("kerne module %s(%s) build id %s", module_.c_str(), filePath_.c_str(),
                   buildId_.c_str());
             return buildId_.empty() ? false : true;
diff --git a/src/virtual_runtime.cpp b/src/virtual_runtime.cpp
index 6f7d01e..aa1a0ba 100644
--- a/src/virtual_runtime.cpp
+++ b/src/virtual_runtime.cpp
@@ -646,7 +646,7 @@ void VirtualRuntime::UpdateFromPerfData(const std::vector<SymbolFileStruct> &sym
             // use give us path ,we must reload it.
             symbolsFile->LoadSymbols();
         }
-        symbolsFile->id_ = symbolsFiles_.size();
+        symbolsFile->id_ = static_cast<int32_t>(symbolsFiles_.size());
         symbolsFiles_.emplace_back(std::move(symbolsFile));
     }
 }