diff --git a/http_fetcher_unittest.cc b/http_fetcher_unittest.cc
index a50654e..119c3d9 100644
--- a/http_fetcher_unittest.cc
+++ b/http_fetcher_unittest.cc
@@ -113,8 +113,7 @@
     int line_len = read(server_stdout, line, sizeof(line) - 1);
     if (line_len <= static_cast<int>(listening_msg_prefix_len)) {
       if (line_len < 0) {
-        LOG(ERROR) << "error reading http server stdout: "
-                   << strerror(errno);
+        PLOG(ERROR) << "error reading http server stdout";
       } else {
         LOG(ERROR) << "server output too short";
       }
diff --git a/utils.h b/utils.h
index 6d8b373..f242c39 100644
--- a/utils.h
+++ b/utils.h
@@ -522,8 +522,7 @@
         should_remove_(true) {}
   ~ScopedPathUnlinker() {
     if (should_remove_ && unlink(path_.c_str()) < 0) {
-      std::string err_message = strerror(errno);
-      LOG(ERROR) << "Unable to unlink path " << path_ << ": " << err_message;
+      PLOG(ERROR) << "Unable to unlink path " << path_;
     }
   }
   void set_should_remove(bool should_remove) { should_remove_ = should_remove; }