diff --git a/logger/Logger.cxx b/logger/Logger.cxx
index 10e77bd..27ec2e1 100644
--- a/logger/Logger.cxx
+++ b/logger/Logger.cxx
@@ -489,7 +489,7 @@ void Logger::SetConsoleColor(const bool colored)
     fColored = colored;
 }
 
-void Logger::InitFileSink(const Severity severity, const string& filename, bool customizeName)
+string Logger::InitFileSink(const Severity severity, const string& filename, bool customizeName)
 {
     lock_guard<mutex> lock(fMtx);
     if (fFileStream.is_open()) {
@@ -520,15 +520,16 @@ void Logger::InitFileSink(const Severity severity, const string& filename, bool
         cout << "Error opening file: " << fullName;
     }
 
+    return fullName;
 }
 
-void Logger::InitFileSink(const string& severityStr, const string& filename, bool customizeName)
+string Logger::InitFileSink(const string& severityStr, const string& filename, bool customizeName)
 {
     if (fSeverityMap.count(severityStr)) {
-        InitFileSink(fSeverityMap.at(severityStr), filename, customizeName);
+        return InitFileSink(fSeverityMap.at(severityStr), filename, customizeName);
     } else {
         LOG(error) << "Unknown severity setting: '" << severityStr << "', setting to default 'info'.";
-        InitFileSink(Severity::info, filename);
+        return InitFileSink(Severity::info, filename);
     }
 }
 
diff --git a/logger/Logger.h b/logger/Logger.h
index 5c8fee5..fba5fc9 100644
--- a/logger/Logger.h
+++ b/logger/Logger.h
@@ -272,8 +272,8 @@ class Logger
 
     static void SetConsoleColor(const bool colored = true);
 
-    static void InitFileSink(const Severity severity, const std::string& filename, bool customizeName = true);
-    static void InitFileSink(const std::string& severityStr, const std::string& filename, bool customizeName = true);
+    static std::string InitFileSink(const Severity severity, const std::string& filename, bool customizeName = true);
+    static std::string InitFileSink(const std::string& severityStr, const std::string& filename, bool customizeName = true);
 
     static void RemoveFileSink();