diff --git a/logging.cpp b/logging.cpp
index 50642a2..283d115 100644
--- a/logging.cpp
+++ b/logging.cpp
@@ -46,7 +46,7 @@
 // fopen(3)'s the given file, by mounting volumes and making parent dirs as necessary. Returns the
 // file pointer, or nullptr on error.
 static FILE* fopen_path(const std::string& path, const char* mode) {
-  if (ensure_path_mounted(path.c_str()) != 0) {
+  if (ensure_path_mounted(path) != 0) {
     LOG(ERROR) << "Can't mount " << path;
     return nullptr;
   }