diff --git a/src/common/logging/backend.h b/src/common/logging/backend.h
index 57884e247..a6714ffd0 100644
--- a/src/common/logging/backend.h
+++ b/src/common/logging/backend.h
@@ -24,7 +24,7 @@ struct Entry {
     std::chrono::microseconds timestamp;
     Class log_class;
     Level log_level;
-    std::string filename;
+    const char* filename;
     unsigned int line_num;
     std::string function;
     std::string message;