diff --git a/src/zip.cpp b/src/zip.cpp
index e52e556..e4e2b12 100644
--- a/src/zip.cpp
+++ b/src/zip.cpp
@@ -56,7 +56,7 @@ std::vector<std::string> list(const fs::path &filepath)
                                     "Skipping in-EPUB file.\n")
                               .str()
                               .c_str(),
-                          filepath);
+                          filepath.c_str());
             continue;
         }
         toc.emplace_back(in_epub_filepath);